data.finset.image ⟷ Mathlib.Data.Finset.Image

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -895,7 +895,7 @@ theorem subtype_map (p : α → Prop) [DecidablePred p] {s : Finset α} :
     (s.Subtype p).map (Embedding.subtype _) = s.filterₓ p :=
   by
   ext x
-  simp [and_comm' _ (_ = _), @and_left_comm _ (_ = _), and_comm' (p x) (x ∈ s)]
+  simp [and_comm _ (_ = _), @and_left_comm _ (_ = _), and_comm (p x) (x ∈ s)]
 #align finset.subtype_map Finset.subtype_map
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -475,7 +475,7 @@ instance canLift (c) (p) [CanLift β α c p] :
 
 #print Finset.image_congr /-
 theorem image_congr (h : (s : Set α).EqOn f g) : Finset.image f s = Finset.image g s := by ext;
-  simp_rw [mem_image]; exact bex_congr fun x hx => by rw [h hx]
+  simp_rw [mem_image]; exact exists₂_congr fun x hx => by rw [h hx]
 #align finset.image_congr Finset.image_congr
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -6,7 +6,7 @@ Authors: Leonardo de Moura, Jeremy Avigad, Minchao Wu, Mario Carneiro
 import Algebra.Group.Embedding
 import Data.Fin.Basic
 import Data.Finset.Basic
-import Data.Int.Order.Basic
+import Algebra.Order.Group.Int
 
 #align_import data.finset.image from "leanprover-community/mathlib"@"65a1391a0106c9204fe45bc73a039f056558cb83"
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -3,7 +3,7 @@ Copyright (c) 2015 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Leonardo de Moura, Jeremy Avigad, Minchao Wu, Mario Carneiro
 -/
-import Algebra.Hom.Embedding
+import Algebra.Group.Embedding
 import Data.Fin.Basic
 import Data.Finset.Basic
 import Data.Int.Order.Basic

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -351,7 +351,7 @@ theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
   by
   refine' disjoint_iff_inf_le.mpr _
   intro k hk
-  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk 
+  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_left_embedding Finset.disjoint_range_addLeftEmbedding
@@ -363,7 +363,7 @@ theorem disjoint_range_addRightEmbedding (a b : ℕ) :
   by
   refine' disjoint_iff_inf_le.mpr _
   intro k hk
-  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk 
+  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_right_embedding Finset.disjoint_range_addRightEmbedding
@@ -936,7 +936,7 @@ subtype. -/
 theorem map_subtype_subset {t : Set α} (s : Finset t) : ↑(s.map (Embedding.subtype _)) ⊆ t :=
   by
   intro a ha
-  rw [mem_coe] at ha 
+  rw [mem_coe] at ha
   convert property_of_mem_map_subtype s ha
 #align finset.map_subtype_subset Finset.map_subtype_subset
 -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -518,14 +518,14 @@ protected theorem Nonempty.image (h : s.Nonempty) (f : α → β) : (s.image f).
 #align finset.nonempty.image Finset.Nonempty.image
 -/
 
-#print Finset.Nonempty.image_iff /-
+#print Finset.image_nonempty /-
 @[simp]
-theorem Nonempty.image_iff (f : α → β) : (s.image f).Nonempty ↔ s.Nonempty :=
+theorem Finset.image_nonempty (f : α → β) : (s.image f).Nonempty ↔ s.Nonempty :=
   ⟨fun ⟨y, hy⟩ =>
     let ⟨x, hx, _⟩ := mem_image.mp hy
     ⟨x, hx⟩,
     fun h => h.image f⟩
-#align finset.nonempty.image_iff Finset.Nonempty.image_iff
+#align finset.nonempty.image_iff Finset.image_nonempty
 -/
 
 #print Finset.image_toFinset /-

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -614,15 +614,15 @@ theorem coe_image_subset_range : ↑(s.image f) ⊆ Set.range f :=
 #align finset.coe_image_subset_range Finset.coe_image_subset_range
 -/
 
-#print Finset.image_filter /-
-theorem image_filter {p : β → Prop} [DecidablePred p] :
+#print Finset.filter_image /-
+theorem filter_image {p : β → Prop} [DecidablePred p] :
     (s.image f).filterₓ p = (s.filterₓ (p ∘ f)).image f :=
   ext fun b => by
     simp only [mem_filter, mem_image, exists_prop] <;>
       exact
         ⟨by rintro ⟨⟨x, h1, rfl⟩, h2⟩ <;> exact ⟨x, ⟨h1, h2⟩, rfl⟩, by
           rintro ⟨x, ⟨h1, h2⟩, rfl⟩ <;> exact ⟨⟨x, h1, rfl⟩, h2⟩⟩
-#align finset.image_filter Finset.image_filter
+#align finset.image_filter Finset.filter_image
 -/
 
 #print Finset.image_union /-

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -602,7 +602,7 @@ theorem image_mono (f : α → β) : Monotone (Finset.image f) := fun _ _ => ima
 
 #print Finset.image_subset_image_iff /-
 theorem image_subset_image_iff {t : Finset α} (hf : Injective f) : s.image f ⊆ t.image f ↔ s ⊆ t :=
-  by simp_rw [← coe_subset]; push_cast ; exact Set.image_subset_image_iff hf
+  by simp_rw [← coe_subset]; push_cast; exact Set.image_subset_image_iff hf
 #align finset.image_subset_image_iff Finset.image_subset_image_iff
 -/
 
@@ -643,7 +643,7 @@ theorem image_inter_subset [DecidableEq α] (f : α → β) (s t : Finset α) :
 #print Finset.image_inter_of_injOn /-
 theorem image_inter_of_injOn [DecidableEq α] {f : α → β} (s t : Finset α)
     (hf : Set.InjOn f (s ∪ t)) : (s ∩ t).image f = s.image f ∩ t.image f :=
-  coe_injective <| by push_cast ;
+  coe_injective <| by push_cast;
     exact Set.image_inter_on fun a ha b hb => hf (Or.inr ha) <| Or.inl hb
 #align finset.image_inter_of_inj_on Finset.image_inter_of_injOn
 -/
@@ -703,14 +703,14 @@ theorem image_eq_empty : s.image f = ∅ ↔ s = ∅ :=
 #print Finset.image_sdiff /-
 theorem image_sdiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s \ t).image f = s.image f \ t.image f :=
-  coe_injective <| by push_cast ; exact Set.image_diff hf _ _
+  coe_injective <| by push_cast; exact Set.image_diff hf _ _
 #align finset.image_sdiff Finset.image_sdiff
 -/
 
 #print Finset.image_symmDiff /-
 theorem image_symmDiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s ∆ t).image f = s.image f ∆ t.image f :=
-  coe_injective <| by push_cast ; exact Set.image_symmDiff hf _ _
+  coe_injective <| by push_cast; exact Set.image_symmDiff hf _ _
 #align finset.image_symm_diff Finset.image_symmDiff
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -225,25 +225,31 @@ theorem filter_map {p : β → Prop} [DecidablePred p] :
 #align finset.filter_map Finset.filter_map
 -/
 
+#print Finset.map_filter' /-
 theorem map_filter' (p : α → Prop) [DecidablePred p] (f : α ↪ β) (s : Finset α)
     [DecidablePred fun b => ∃ a, p a ∧ f a = b] :
     (s.filterₓ p).map f = (s.map f).filterₓ fun b => ∃ a, p a ∧ f a = b := by
   simp [(· ∘ ·), filter_map, f.injective.eq_iff]
 #align finset.map_filter' Finset.map_filter'
+-/
 
+#print Finset.filter_attach' /-
 theorem filter_attach' [DecidableEq α] (s : Finset α) (p : s → Prop) [DecidablePred p] :
     s.attach.filterₓ p =
       (s.filterₓ fun x => ∃ h, p ⟨x, h⟩).attach.map
         ⟨Subtype.map id <| filter_subset _ _, Subtype.map_injective _ injective_id⟩ :=
   eq_of_veq <| Multiset.filter_attach' _ _
 #align finset.filter_attach' Finset.filter_attach'
+-/
 
+#print Finset.filter_attach /-
 @[simp]
 theorem filter_attach (p : α → Prop) [DecidablePred p] (s : Finset α) :
     (s.attach.filterₓ fun x => p ↑x) =
       (s.filterₓ p).attach.map ((Embedding.refl _).subtypeMap mem_of_mem_filter) :=
   eq_of_veq <| Multiset.filter_attach _ _
 #align finset.filter_attach Finset.filter_attach
+-/
 
 #print Finset.map_filter /-
 theorem map_filter {f : α ≃ β} {p : α → Prop} [DecidablePred p] :

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -8,7 +8,7 @@ import Data.Fin.Basic
 import Data.Finset.Basic
 import Data.Int.Order.Basic
 
-#align_import data.finset.image from "leanprover-community/mathlib"@"b685f506164f8d17a6404048bc4d696739c5d976"
+#align_import data.finset.image from "leanprover-community/mathlib"@"65a1391a0106c9204fe45bc73a039f056558cb83"
 
 /-! # Image and map operations on finite sets
 
@@ -225,6 +225,26 @@ theorem filter_map {p : β → Prop} [DecidablePred p] :
 #align finset.filter_map Finset.filter_map
 -/
 
+theorem map_filter' (p : α → Prop) [DecidablePred p] (f : α ↪ β) (s : Finset α)
+    [DecidablePred fun b => ∃ a, p a ∧ f a = b] :
+    (s.filterₓ p).map f = (s.map f).filterₓ fun b => ∃ a, p a ∧ f a = b := by
+  simp [(· ∘ ·), filter_map, f.injective.eq_iff]
+#align finset.map_filter' Finset.map_filter'
+
+theorem filter_attach' [DecidableEq α] (s : Finset α) (p : s → Prop) [DecidablePred p] :
+    s.attach.filterₓ p =
+      (s.filterₓ fun x => ∃ h, p ⟨x, h⟩).attach.map
+        ⟨Subtype.map id <| filter_subset _ _, Subtype.map_injective _ injective_id⟩ :=
+  eq_of_veq <| Multiset.filter_attach' _ _
+#align finset.filter_attach' Finset.filter_attach'
+
+@[simp]
+theorem filter_attach (p : α → Prop) [DecidablePred p] (s : Finset α) :
+    (s.attach.filterₓ fun x => p ↑x) =
+      (s.filterₓ p).attach.map ((Embedding.refl _).subtypeMap mem_of_mem_filter) :=
+  eq_of_veq <| Multiset.filter_attach _ _
+#align finset.filter_attach Finset.filter_attach
+
 #print Finset.map_filter /-
 theorem map_filter {f : α ≃ β} {p : α → Prop} [DecidablePred p] :
     (s.filterₓ p).map f.toEmbedding = (s.map f.toEmbedding).filterₓ (p ∘ f.symm) := by

mathlib commit https://github.com/leanprover-community/mathlib/commit/ce64cd319bb6b3e82f31c2d38e79080d377be451

@@ -3,10 +3,10 @@ Copyright (c) 2015 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Leonardo de Moura, Jeremy Avigad, Minchao Wu, Mario Carneiro
 -/
-import Mathbin.Algebra.Hom.Embedding
-import Mathbin.Data.Fin.Basic
-import Mathbin.Data.Finset.Basic
-import Mathbin.Data.Int.Order.Basic
+import Algebra.Hom.Embedding
+import Data.Fin.Basic
+import Data.Finset.Basic
+import Data.Int.Order.Basic
 
 #align_import data.finset.image from "leanprover-community/mathlib"@"b685f506164f8d17a6404048bc4d696739c5d976"
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/32a7e535287f9c73f2e4d2aef306a39190f0b504

@@ -310,7 +310,7 @@ theorem map_nonempty : (s.map f).Nonempty ↔ s.Nonempty := by
 #align finset.map_nonempty Finset.map_nonempty
 -/
 
-alias map_nonempty ↔ _ Nonempty.map
+alias ⟨_, Nonempty.map⟩ := map_nonempty
 #align finset.nonempty.map Finset.Nonempty.map
 
 #print Finset.attach_map_val /-

mathlib commit https://github.com/leanprover-community/mathlib/commit/63721b2c3eba6c325ecf8ae8cca27155a4f6306f

@@ -684,7 +684,7 @@ theorem image_sdiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Inj
 #print Finset.image_symmDiff /-
 theorem image_symmDiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s ∆ t).image f = s.image f ∆ t.image f :=
-  coe_injective <| by push_cast ; exact Set.image_symm_diff hf _ _
+  coe_injective <| by push_cast ; exact Set.image_symmDiff hf _ _
 #align finset.image_symm_diff Finset.image_symmDiff
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/8ea5598db6caeddde6cb734aa179cc2408dbd345

@@ -2,17 +2,14 @@
 Copyright (c) 2015 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Leonardo de Moura, Jeremy Avigad, Minchao Wu, Mario Carneiro
-
-! This file was ported from Lean 3 source module data.finset.image
-! leanprover-community/mathlib commit b685f506164f8d17a6404048bc4d696739c5d976
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.Hom.Embedding
 import Mathbin.Data.Fin.Basic
 import Mathbin.Data.Finset.Basic
 import Mathbin.Data.Int.Order.Basic
 
+#align_import data.finset.image from "leanprover-community/mathlib"@"b685f506164f8d17a6404048bc4d696739c5d976"
+
 /-! # Image and map operations on finite sets
 
 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4.

mathlib commit https://github.com/leanprover-community/mathlib/commit/9fb8964792b4237dac6200193a0d533f1b3f7423

@@ -58,56 +58,76 @@ def map (f : α ↪ β) (s : Finset α) : Finset β :=
 #align finset.map Finset.map
 -/
 
+#print Finset.map_val /-
 @[simp]
 theorem map_val (f : α ↪ β) (s : Finset α) : (map f s).1 = s.1.map f :=
   rfl
 #align finset.map_val Finset.map_val
+-/
 
+#print Finset.map_empty /-
 @[simp]
 theorem map_empty (f : α ↪ β) : (∅ : Finset α).map f = ∅ :=
   rfl
 #align finset.map_empty Finset.map_empty
+-/
 
 variable {f : α ↪ β} {s : Finset α}
 
+#print Finset.mem_map /-
 @[simp]
 theorem mem_map {b : β} : b ∈ s.map f ↔ ∃ a ∈ s, f a = b :=
   mem_map.trans <| by simp only [exists_prop] <;> rfl
 #align finset.mem_map Finset.mem_map
+-/
 
+#print Finset.mem_map_equiv /-
 @[simp]
 theorem mem_map_equiv {f : α ≃ β} {b : β} : b ∈ s.map f.toEmbedding ↔ f.symm b ∈ s := by
   rw [mem_map]; exact ⟨by rintro ⟨a, H, rfl⟩; simpa, fun h => ⟨_, h, by simp⟩⟩
 #align finset.mem_map_equiv Finset.mem_map_equiv
+-/
 
+#print Finset.mem_map' /-
 theorem mem_map' (f : α ↪ β) {a} {s : Finset α} : f a ∈ s.map f ↔ a ∈ s :=
   mem_map_of_injective f.2
 #align finset.mem_map' Finset.mem_map'
+-/
 
+#print Finset.mem_map_of_mem /-
 theorem mem_map_of_mem (f : α ↪ β) {a} {s : Finset α} : a ∈ s → f a ∈ s.map f :=
   (mem_map' _).2
 #align finset.mem_map_of_mem Finset.mem_map_of_mem
+-/
 
+#print Finset.forall_mem_map /-
 theorem forall_mem_map {f : α ↪ β} {s : Finset α} {p : ∀ a, a ∈ s.map f → Prop} :
     (∀ y ∈ s.map f, p y H) ↔ ∀ x ∈ s, p (f x) (mem_map_of_mem _ H) :=
   ⟨fun h y hy => h (f y) (mem_map_of_mem _ hy), fun h x hx => by
     obtain ⟨y, hy, rfl⟩ := mem_map.1 hx; exact h _ hy⟩
 #align finset.forall_mem_map Finset.forall_mem_map
+-/
 
+#print Finset.apply_coe_mem_map /-
 theorem apply_coe_mem_map (f : α ↪ β) (s : Finset α) (x : s) : f x ∈ s.map f :=
   mem_map_of_mem f x.Prop
 #align finset.apply_coe_mem_map Finset.apply_coe_mem_map
+-/
 
+#print Finset.coe_map /-
 @[simp, norm_cast]
 theorem coe_map (f : α ↪ β) (s : Finset α) : (s.map f : Set β) = f '' s :=
   Set.ext fun x => mem_map.trans Set.mem_image_iff_bex.symm
 #align finset.coe_map Finset.coe_map
+-/
 
+#print Finset.coe_map_subset_range /-
 theorem coe_map_subset_range (f : α ↪ β) (s : Finset α) : (s.map f : Set β) ⊆ Set.range f :=
   calc
     ↑(s.map f) = f '' s := coe_map f s
     _ ⊆ Set.range f := Set.image_subset_range f ↑s
 #align finset.coe_map_subset_range Finset.coe_map_subset_range
+-/
 
 #print Finset.map_perm /-
 /-- If the only elements outside `s` are those left fixed by `σ`, then mapping by `σ` has no effect.
@@ -117,10 +137,12 @@ theorem map_perm {σ : Equiv.Perm α} (hs : {a | σ a ≠ a} ⊆ s) : s.map (σ
 #align finset.map_perm Finset.map_perm
 -/
 
+#print Finset.map_toFinset /-
 theorem map_toFinset [DecidableEq α] [DecidableEq β] {s : Multiset α} :
     s.toFinset.map f = (s.map f).toFinset :=
   ext fun _ => by simp only [mem_map, Multiset.mem_map, exists_prop, Multiset.mem_toFinset]
 #align finset.map_to_finset Finset.map_toFinset
+-/
 
 #print Finset.map_refl /-
 @[simp]
@@ -136,19 +158,25 @@ theorem map_cast_heq {α β} (h : α = β) (s : Finset α) : HEq (s.map (Equiv.c
 #align finset.map_cast_heq Finset.map_cast_heq
 -/
 
+#print Finset.map_map /-
 theorem map_map (f : α ↪ β) (g : β ↪ γ) (s : Finset α) : (s.map f).map g = s.map (f.trans g) :=
   eq_of_veq <| by simp only [map_val, Multiset.map_map] <;> rfl
 #align finset.map_map Finset.map_map
+-/
 
+#print Finset.map_comm /-
 theorem map_comm {β'} {f : β ↪ γ} {g : α ↪ β} {f' : α ↪ β'} {g' : β' ↪ γ}
     (h_comm : ∀ a, f (g a) = g' (f' a)) : (s.map g).map f = (s.map f').map g' := by
   simp_rw [map_map, embedding.trans, Function.comp, h_comm]
 #align finset.map_comm Finset.map_comm
+-/
 
+#print Function.Semiconj.finset_map /-
 theorem Function.Semiconj.finset_map {f : α ↪ β} {ga : α ↪ α} {gb : β ↪ β}
     (h : Function.Semiconj f ga gb) : Function.Semiconj (map f) (map ga) (map gb) := fun s =>
   map_comm h
 #align function.semiconj.finset_map Function.Semiconj.finset_map
+-/
 
 #print Function.Commute.finset_map /-
 theorem Function.Commute.finset_map {f g : α ↪ α} (h : Function.Commute f g) :
@@ -157,11 +185,13 @@ theorem Function.Commute.finset_map {f g : α ↪ α} (h : Function.Commute f g)
 #align function.commute.finset_map Function.Commute.finset_map
 -/
 
+#print Finset.map_subset_map /-
 @[simp]
 theorem map_subset_map {s₁ s₂ : Finset α} : s₁.map f ⊆ s₂.map f ↔ s₁ ⊆ s₂ :=
   ⟨fun h x xs => (mem_map' _).1 <| h <| (mem_map' f).2 xs, fun h => by
     simp [subset_def, map_subset_map h]⟩
 #align finset.map_subset_map Finset.map_subset_map
+-/
 
 #print Finset.mapEmbedding /-
 /-- Associate to an embedding `f` from `α` to `β` the order embedding that maps a finset to its
@@ -171,19 +201,25 @@ def mapEmbedding (f : α ↪ β) : Finset α ↪o Finset β :=
 #align finset.map_embedding Finset.mapEmbedding
 -/
 
+#print Finset.map_inj /-
 @[simp]
 theorem map_inj {s₁ s₂ : Finset α} : s₁.map f = s₂.map f ↔ s₁ = s₂ :=
   (mapEmbedding f).Injective.eq_iff
 #align finset.map_inj Finset.map_inj
+-/
 
+#print Finset.map_injective /-
 theorem map_injective (f : α ↪ β) : Injective (map f) :=
   (mapEmbedding f).Injective
 #align finset.map_injective Finset.map_injective
+-/
 
+#print Finset.mapEmbedding_apply /-
 @[simp]
 theorem mapEmbedding_apply : mapEmbedding f s = map f s :=
   rfl
 #align finset.map_embedding_apply Finset.mapEmbedding_apply
+-/
 
 #print Finset.filter_map /-
 theorem filter_map {p : β → Prop} [DecidablePred p] :
@@ -192,11 +228,14 @@ theorem filter_map {p : β → Prop} [DecidablePred p] :
 #align finset.filter_map Finset.filter_map
 -/
 
+#print Finset.map_filter /-
 theorem map_filter {f : α ≃ β} {p : α → Prop} [DecidablePred p] :
     (s.filterₓ p).map f.toEmbedding = (s.map f.toEmbedding).filterₓ (p ∘ f.symm) := by
   simp only [filter_map, Function.comp, Equiv.toEmbedding_apply, Equiv.symm_apply_apply]
 #align finset.map_filter Finset.map_filter
+-/
 
+#print Finset.disjoint_map /-
 @[simp]
 theorem disjoint_map {s t : Finset α} (f : α ↪ β) : Disjoint (s.map f) (t.map f) ↔ Disjoint s t :=
   by
@@ -205,44 +244,59 @@ theorem disjoint_map {s t : Finset α} (f : α ↪ β) : Disjoint (s.map f) (t.m
   rintro h _ a ha rfl _ b hb rfl
   exact f.injective.ne (h _ ha _ hb)
 #align finset.disjoint_map Finset.disjoint_map
+-/
 
+#print Finset.map_disjUnion /-
 theorem map_disjUnion {f : α ↪ β} (s₁ s₂ : Finset α) (h) (h' := (disjoint_map _).mpr h) :
     (s₁.disjUnion s₂ h).map f = (s₁.map f).disjUnion (s₂.map f) h' :=
   eq_of_veq <| Multiset.map_add _ _ _
 #align finset.map_disj_union Finset.map_disjUnion
+-/
 
+#print Finset.map_disjUnion' /-
 /-- A version of `finset.map_disj_union` for writing in the other direction. -/
 theorem map_disjUnion' {f : α ↪ β} (s₁ s₂ : Finset α) (h') (h := (disjoint_map _).mp h') :
     (s₁.disjUnion s₂ h).map f = (s₁.map f).disjUnion (s₂.map f) h' :=
   map_disjUnion _ _ _
 #align finset.map_disj_union' Finset.map_disjUnion'
+-/
 
+#print Finset.map_union /-
 theorem map_union [DecidableEq α] [DecidableEq β] {f : α ↪ β} (s₁ s₂ : Finset α) :
     (s₁ ∪ s₂).map f = s₁.map f ∪ s₂.map f :=
   coe_injective <| by simp only [coe_map, coe_union, Set.image_union]
 #align finset.map_union Finset.map_union
+-/
 
+#print Finset.map_inter /-
 theorem map_inter [DecidableEq α] [DecidableEq β] {f : α ↪ β} (s₁ s₂ : Finset α) :
     (s₁ ∩ s₂).map f = s₁.map f ∩ s₂.map f :=
   coe_injective <| by simp only [coe_map, coe_inter, Set.image_inter f.injective]
 #align finset.map_inter Finset.map_inter
+-/
 
+#print Finset.map_singleton /-
 @[simp]
 theorem map_singleton (f : α ↪ β) (a : α) : map f {a} = {f a} :=
   coe_injective <| by simp only [coe_map, coe_singleton, Set.image_singleton]
 #align finset.map_singleton Finset.map_singleton
+-/
 
+#print Finset.map_insert /-
 @[simp]
 theorem map_insert [DecidableEq α] [DecidableEq β] (f : α ↪ β) (a : α) (s : Finset α) :
     (insert a s).map f = insert (f a) (s.map f) := by
   simp only [insert_eq, map_union, map_singleton]
 #align finset.map_insert Finset.map_insert
+-/
 
+#print Finset.map_cons /-
 @[simp]
 theorem map_cons (f : α ↪ β) (a : α) (s : Finset α) (ha : a ∉ s) :
     (cons a s ha).map f = cons (f a) (s.map f) (by simpa using ha) :=
   eq_of_veq <| Multiset.map_cons f a s.val
 #align finset.map_cons Finset.map_cons
+-/
 
 #print Finset.map_eq_empty /-
 @[simp]
@@ -268,6 +322,7 @@ theorem attach_map_val {s : Finset α} : s.attach.map (Embedding.subtype _) = s
 #align finset.attach_map_val Finset.attach_map_val
 -/
 
+#print Finset.disjoint_range_addLeftEmbedding /-
 theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
     Disjoint (range a) (map (addLeftEmbedding a) (range b)) :=
   by
@@ -277,7 +332,9 @@ theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_left_embedding Finset.disjoint_range_addLeftEmbedding
+-/
 
+#print Finset.disjoint_range_addRightEmbedding /-
 theorem disjoint_range_addRightEmbedding (a b : ℕ) :
     Disjoint (range a) (map (addRightEmbedding a) (range b)) :=
   by
@@ -287,14 +344,18 @@ theorem disjoint_range_addRightEmbedding (a b : ℕ) :
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_right_embedding Finset.disjoint_range_addRightEmbedding
+-/
 
+#print Finset.map_disjiUnion /-
 theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h} :
     (s.map f).disjUnionₓ t h =
       s.disjUnionₓ (fun a => t (f a)) fun a ha b hb hab =>
         h (mem_map_of_mem _ ha) (mem_map_of_mem _ hb) (f.Injective.Ne hab) :=
   eq_of_veq <| Multiset.bind_map _ _ _
 #align finset.map_disj_Union Finset.map_disjiUnion
+-/
 
+#print Finset.disjiUnion_map /-
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =
       s.disjUnionₓ (fun a => (t a).map f) fun a ha b hb hab =>
@@ -306,13 +367,16 @@ theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h
           exact disjoint_left.mp (h ha hb hab) hfa hfb :=
   eq_of_veq <| Multiset.map_bind _ _ _
 #align finset.disj_Union_map Finset.disjiUnion_map
+-/
 
 end Map
 
+#print Finset.range_add_one' /-
 theorem range_add_one' (n : ℕ) :
     range (n + 1) = insert 0 ((range n).map ⟨fun i => i + 1, fun i j => Nat.succ.inj⟩) := by
   ext (⟨⟩ | ⟨n⟩) <;> simp [Nat.succ_eq_add_one, Nat.zero_lt_succ n]
 #align finset.range_add_one' Finset.range_add_one'
+-/
 
 /-! ### image -/
 
@@ -328,10 +392,12 @@ def image (f : α → β) (s : Finset α) : Finset β :=
 #align finset.image Finset.image
 -/
 
+#print Finset.image_val /-
 @[simp]
 theorem image_val (f : α → β) (s : Finset α) : (image f s).1 = (s.1.map f).dedup :=
   rfl
 #align finset.image_val Finset.image_val
+-/
 
 #print Finset.image_empty /-
 @[simp]
@@ -342,14 +408,18 @@ theorem image_empty (f : α → β) : (∅ : Finset α).image f = ∅ :=
 
 variable {f g : α → β} {s : Finset α} {t : Finset β} {a : α} {b c : β}
 
+#print Finset.mem_image /-
 @[simp]
 theorem mem_image : b ∈ s.image f ↔ ∃ a ∈ s, f a = b := by
   simp only [mem_def, image_val, mem_dedup, Multiset.mem_map, exists_prop]
 #align finset.mem_image Finset.mem_image
+-/
 
+#print Finset.mem_image_of_mem /-
 theorem mem_image_of_mem (f : α → β) {a} (h : a ∈ s) : f a ∈ s.image f :=
   mem_image.2 ⟨_, h, rfl⟩
 #align finset.mem_image_of_mem Finset.mem_image_of_mem
+-/
 
 #print Finset.forall_image /-
 theorem forall_image {p : β → Prop} : (∀ b ∈ s.image f, p b) ↔ ∀ a ∈ s, p (f a) := by
@@ -380,17 +450,22 @@ instance canLift (c) (p) [CanLift β α c p] :
 #align finset.can_lift Finset.canLift
 -/
 
+#print Finset.image_congr /-
 theorem image_congr (h : (s : Set α).EqOn f g) : Finset.image f s = Finset.image g s := by ext;
   simp_rw [mem_image]; exact bex_congr fun x hx => by rw [h hx]
 #align finset.image_congr Finset.image_congr
+-/
 
+#print Function.Injective.mem_finset_image /-
 theorem Function.Injective.mem_finset_image (hf : Injective f) : f a ∈ s.image f ↔ a ∈ s :=
   by
   refine' ⟨fun h => _, Finset.mem_image_of_mem f⟩
   obtain ⟨y, hy, heq⟩ := mem_image.1 h
   exact hf HEq ▸ hy
 #align function.injective.mem_finset_image Function.Injective.mem_finset_image
+-/
 
+#print Finset.filter_mem_image_eq_image /-
 theorem filter_mem_image_eq_image (f : α → β) (s : Finset α) (t : Finset β) (h : ∀ x ∈ s, f x ∈ t) :
     (t.filterₓ fun y => y ∈ s.image f) = s.image f :=
   by
@@ -398,10 +473,13 @@ theorem filter_mem_image_eq_image (f : α → β) (s : Finset α) (t : Finset β
   simp only [and_imp, exists_prop, and_iff_right_iff_imp, exists_imp]
   rintro x xel rfl; exact h _ xel
 #align finset.filter_mem_image_eq_image Finset.filter_mem_image_eq_image
+-/
 
+#print Finset.fiber_nonempty_iff_mem_image /-
 theorem fiber_nonempty_iff_mem_image (f : α → β) (s : Finset α) (y : β) :
     (s.filterₓ fun x => f x = y).Nonempty ↔ y ∈ s.image f := by simp [Finset.Nonempty]
 #align finset.fiber_nonempty_iff_mem_image Finset.fiber_nonempty_iff_mem_image
+-/
 
 #print Finset.coe_image /-
 @[simp, norm_cast]
@@ -410,10 +488,12 @@ theorem coe_image {f : α → β} : ↑(s.image f) = f '' ↑s :=
 #align finset.coe_image Finset.coe_image
 -/
 
+#print Finset.Nonempty.image /-
 protected theorem Nonempty.image (h : s.Nonempty) (f : α → β) : (s.image f).Nonempty :=
   let ⟨a, ha⟩ := h
   ⟨f a, mem_image_of_mem f ha⟩
 #align finset.nonempty.image Finset.Nonempty.image
+-/
 
 #print Finset.Nonempty.image_iff /-
 @[simp]
@@ -425,13 +505,17 @@ theorem Nonempty.image_iff (f : α → β) : (s.image f).Nonempty ↔ s.Nonempty
 #align finset.nonempty.image_iff Finset.Nonempty.image_iff
 -/
 
+#print Finset.image_toFinset /-
 theorem image_toFinset [DecidableEq α] {s : Multiset α} : s.toFinset.image f = (s.map f).toFinset :=
   ext fun _ => by simp only [mem_image, Multiset.mem_toFinset, exists_prop, Multiset.mem_map]
 #align finset.image_to_finset Finset.image_toFinset
+-/
 
+#print Finset.image_val_of_injOn /-
 theorem image_val_of_injOn (H : Set.InjOn f s) : (image f s).1 = s.1.map f :=
   (s.2.map_onₓ H).dedup
 #align finset.image_val_of_inj_on Finset.image_val_of_injOn
+-/
 
 #print Finset.image_id /-
 @[simp]
@@ -460,10 +544,12 @@ theorem image_comm {β'} [DecidableEq β'] [DecidableEq γ] {f : β → γ} {g :
 #align finset.image_comm Finset.image_comm
 -/
 
+#print Function.Semiconj.finset_image /-
 theorem Function.Semiconj.finset_image [DecidableEq α] {f : α → β} {ga : α → α} {gb : β → β}
     (h : Function.Semiconj f ga gb) : Function.Semiconj (image f) (image ga) (image gb) := fun s =>
   image_comm h
 #align function.semiconj.finset_image Function.Semiconj.finset_image
+-/
 
 #print Function.Commute.finset_image /-
 theorem Function.Commute.finset_image [DecidableEq α] {f g : α → α} (h : Function.Commute f g) :
@@ -472,9 +558,11 @@ theorem Function.Commute.finset_image [DecidableEq α] {f g : α → α} (h : Fu
 #align function.commute.finset_image Function.Commute.finset_image
 -/
 
+#print Finset.image_subset_image /-
 theorem image_subset_image {s₁ s₂ : Finset α} (h : s₁ ⊆ s₂) : s₁.image f ⊆ s₂.image f := by
   simp only [subset_def, image_val, subset_dedup', dedup_subset', Multiset.map_subset_map h]
 #align finset.image_subset_image Finset.image_subset_image
+-/
 
 #print Finset.image_subset_iff /-
 theorem image_subset_iff : s.image f ⊆ t ↔ ∀ x ∈ s, f x ∈ t :=
@@ -484,12 +572,16 @@ theorem image_subset_iff : s.image f ⊆ t ↔ ∀ x ∈ s, f x ∈ t :=
 #align finset.image_subset_iff Finset.image_subset_iff
 -/
 
+#print Finset.image_mono /-
 theorem image_mono (f : α → β) : Monotone (Finset.image f) := fun _ _ => image_subset_image
 #align finset.image_mono Finset.image_mono
+-/
 
+#print Finset.image_subset_image_iff /-
 theorem image_subset_image_iff {t : Finset α} (hf : Injective f) : s.image f ⊆ t.image f ↔ s ⊆ t :=
   by simp_rw [← coe_subset]; push_cast ; exact Set.image_subset_image_iff hf
 #align finset.image_subset_image_iff Finset.image_subset_image_iff
+-/
 
 #print Finset.coe_image_subset_range /-
 theorem coe_image_subset_range : ↑(s.image f) ⊆ Set.range f :=
@@ -510,27 +602,35 @@ theorem image_filter {p : β → Prop} [DecidablePred p] :
 #align finset.image_filter Finset.image_filter
 -/
 
+#print Finset.image_union /-
 theorem image_union [DecidableEq α] {f : α → β} (s₁ s₂ : Finset α) :
     (s₁ ∪ s₂).image f = s₁.image f ∪ s₂.image f :=
   ext fun _ => by simp only [mem_image, mem_union, exists_prop, or_and_right, exists_or]
 #align finset.image_union Finset.image_union
+-/
 
+#print Finset.image_inter_subset /-
 theorem image_inter_subset [DecidableEq α] (f : α → β) (s t : Finset α) :
     (s ∩ t).image f ⊆ s.image f ∩ t.image f :=
   subset_inter (image_subset_image <| inter_subset_left _ _) <|
     image_subset_image <| inter_subset_right _ _
 #align finset.image_inter_subset Finset.image_inter_subset
+-/
 
+#print Finset.image_inter_of_injOn /-
 theorem image_inter_of_injOn [DecidableEq α] {f : α → β} (s t : Finset α)
     (hf : Set.InjOn f (s ∪ t)) : (s ∩ t).image f = s.image f ∩ t.image f :=
   coe_injective <| by push_cast ;
     exact Set.image_inter_on fun a ha b hb => hf (Or.inr ha) <| Or.inl hb
 #align finset.image_inter_of_inj_on Finset.image_inter_of_injOn
+-/
 
+#print Finset.image_inter /-
 theorem image_inter [DecidableEq α] (s₁ s₂ : Finset α) (hf : Injective f) :
     (s₁ ∩ s₂).image f = s₁.image f ∩ s₂.image f :=
   image_inter_of_injOn _ _ <| hf.InjOn _
 #align finset.image_inter Finset.image_inter
+-/
 
 #print Finset.image_singleton /-
 @[simp]
@@ -539,12 +639,15 @@ theorem image_singleton (f : α → β) (a : α) : image f {a} = {f a} :=
 #align finset.image_singleton Finset.image_singleton
 -/
 
+#print Finset.image_insert /-
 @[simp]
 theorem image_insert [DecidableEq α] (f : α → β) (a : α) (s : Finset α) :
     (insert a s).image f = insert (f a) (s.image f) := by
   simp only [insert_eq, image_singleton, image_union]
 #align finset.image_insert Finset.image_insert
+-/
 
+#print Finset.erase_image_subset_image_erase /-
 theorem erase_image_subset_image_erase [DecidableEq α] (f : α → β) (s : Finset α) (a : α) :
     (s.image f).eraseₓ (f a) ⊆ (s.eraseₓ a).image f :=
   by
@@ -552,7 +655,9 @@ theorem erase_image_subset_image_erase [DecidableEq α] (f : α → β) (s : Fin
   rintro b hb x hx rfl
   exact ⟨_, ⟨ne_of_apply_ne f hb, hx⟩, rfl⟩
 #align finset.erase_image_subset_image_erase Finset.erase_image_subset_image_erase
+-/
 
+#print Finset.image_erase /-
 @[simp]
 theorem image_erase [DecidableEq α] {f : α → β} (hf : Injective f) (s : Finset α) (a : α) :
     (s.eraseₓ a).image f = (s.image f).eraseₓ (f a) :=
@@ -562,6 +667,7 @@ theorem image_erase [DecidableEq α] {f : α → β} (hf : Injective f) (s : Fin
   rintro ⟨a', ⟨haa', ha'⟩, rfl⟩
   exact ⟨hf.ne haa', a', ha', rfl⟩
 #align finset.image_erase Finset.image_erase
+-/
 
 #print Finset.image_eq_empty /-
 @[simp]
@@ -571,22 +677,28 @@ theorem image_eq_empty : s.image f = ∅ ↔ s = ∅ :=
 #align finset.image_eq_empty Finset.image_eq_empty
 -/
 
+#print Finset.image_sdiff /-
 theorem image_sdiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s \ t).image f = s.image f \ t.image f :=
   coe_injective <| by push_cast ; exact Set.image_diff hf _ _
 #align finset.image_sdiff Finset.image_sdiff
+-/
 
+#print Finset.image_symmDiff /-
 theorem image_symmDiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s ∆ t).image f = s.image f ∆ t.image f :=
   coe_injective <| by push_cast ; exact Set.image_symm_diff hf _ _
 #align finset.image_symm_diff Finset.image_symmDiff
+-/
 
+#print Disjoint.of_image_finset /-
 @[simp]
 theorem Disjoint.of_image_finset {s t : Finset α} {f : α → β}
     (h : Disjoint (s.image f) (t.image f)) : Disjoint s t :=
   disjoint_iff_ne.2 fun a ha b hb =>
     ne_of_apply_ne f <| h.forall_ne_finset (mem_image_of_mem _ ha) (mem_image_of_mem _ hb)
 #align disjoint.of_image_finset Disjoint.of_image_finset
+-/
 
 #print Finset.mem_range_iff_mem_finset_range_of_mod_eq' /-
 theorem mem_range_iff_mem_finset_range_of_mod_eq' [DecidableEq α] {f : ℕ → α} {a : α} {n : ℕ}
@@ -620,9 +732,11 @@ theorem mem_range_iff_mem_finset_range_of_mod_eq [DecidableEq α] {f : ℤ → 
 #align finset.mem_range_iff_mem_finset_range_of_mod_eq Finset.mem_range_iff_mem_finset_range_of_mod_eq
 -/
 
+#print Finset.range_add /-
 theorem range_add (a b : ℕ) : range (a + b) = range a ∪ (range b).map (addLeftEmbedding a) := by
   rw [← val_inj, union_val]; exact Multiset.range_add_eq_union a b
 #align finset.range_add Finset.range_add
+-/
 
 #print Finset.attach_image_val /-
 @[simp]
@@ -640,6 +754,7 @@ theorem attach_image_val [DecidableEq α] {s : Finset α} : s.attach.image coe =
 #align finset.attach_image_coe Finset.attach_image_val
 -/
 
+#print Finset.attach_insert /-
 @[simp]
 theorem attach_insert [DecidableEq α] {a : α} {s : Finset α} :
     attach (insert a s) =
@@ -651,45 +766,60 @@ theorem attach_insert [DecidableEq α] {a : α} {s : Finset α} :
         mem_insert_of_mem <| mem_image.2 <| ⟨⟨x, h⟩, mem_attach _ _, Subtype.eq rfl⟩,
       fun _ => Finset.mem_attach _ _⟩
 #align finset.attach_insert Finset.attach_insert
+-/
 
+#print Finset.map_eq_image /-
 theorem map_eq_image (f : α ↪ β) (s : Finset α) : s.map f = s.image f :=
   eq_of_veq (s.map f).2.dedup.symm
 #align finset.map_eq_image Finset.map_eq_image
+-/
 
+#print Finset.disjoint_image /-
 @[simp]
 theorem disjoint_image {s t : Finset α} {f : α → β} (hf : Injective f) :
     Disjoint (s.image f) (t.image f) ↔ Disjoint s t := by
   convert disjoint_map ⟨_, hf⟩ <;> simp [map_eq_image]
 #align finset.disjoint_image Finset.disjoint_image
+-/
 
+#print Finset.image_const /-
 theorem image_const {s : Finset α} (h : s.Nonempty) (b : β) : (s.image fun a => b) = singleton b :=
   ext fun b' => by
     simp only [mem_image, exists_prop, exists_and_right, h.bex, true_and_iff, mem_singleton,
       eq_comm]
 #align finset.image_const Finset.image_const
+-/
 
+#print Finset.map_erase /-
 @[simp]
 theorem map_erase [DecidableEq α] (f : α ↪ β) (s : Finset α) (a : α) :
     (s.eraseₓ a).map f = (s.map f).eraseₓ (f a) := by simp_rw [map_eq_image];
   exact s.image_erase f.2 a
 #align finset.map_erase Finset.map_erase
+-/
 
+#print Finset.image_biUnion /-
 theorem image_biUnion [DecidableEq γ] {f : α → β} {s : Finset α} {t : β → Finset γ} :
     (s.image f).biUnion t = s.biUnion fun a => t (f a) :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [image_insert, bUnion_insert, ih]
 #align finset.image_bUnion Finset.image_biUnion
+-/
 
+#print Finset.biUnion_image /-
 theorem biUnion_image [DecidableEq γ] {s : Finset α} {t : α → Finset β} {f : β → γ} :
     (s.biUnion t).image f = s.biUnion fun a => (t a).image f :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [bUnion_insert, image_union, ih]
 #align finset.bUnion_image Finset.biUnion_image
+-/
 
+#print Finset.image_biUnion_filter_eq /-
 theorem image_biUnion_filter_eq [DecidableEq α] (s : Finset β) (g : β → α) :
     ((s.image g).biUnion fun a => s.filterₓ fun c => g c = a) = s :=
   biUnion_filter_eq_of_maps_to fun x => mem_image_of_mem g
 #align finset.image_bUnion_filter_eq Finset.image_biUnion_filter_eq
+-/
 
 #print Finset.biUnion_singleton /-
 theorem biUnion_singleton {f : α → β} : (s.biUnion fun a => {f a}) = s.image f :=
@@ -815,10 +945,12 @@ theorem fin_mono {n} : Monotone (Finset.fin n) := fun s t h x => by simpa using
 #align finset.fin_mono Finset.fin_mono
 -/
 
+#print Finset.fin_map /-
 @[simp]
 theorem fin_map {n} {s : Finset ℕ} : (s.Fin n).map Fin.valEmbedding = s.filterₓ (· < n) := by
   simp [Finset.fin, Finset.map_map]
 #align finset.fin_map Finset.fin_map
+-/
 
 #print Finset.subset_image_iff /-
 theorem subset_image_iff [DecidableEq β] {s : Set α} {t : Finset β} {f : α → β} :
@@ -834,6 +966,7 @@ theorem subset_image_iff [DecidableEq β] {s : Set α} {t : Finset β} {f : α 
 #align finset.subset_image_iff Finset.subset_image_iff
 -/
 
+#print Finset.range_sdiff_zero /-
 theorem range_sdiff_zero {n : ℕ} : range (n + 1) \ {0} = (range n).image Nat.succ :=
   by
   induction' n with k hk
@@ -842,13 +975,16 @@ theorem range_sdiff_zero {n : ℕ} : range (n + 1) \ {0} = (range n).image Nat.s
   rw [range_succ, image_insert, ← hk, insert_sdiff_of_not_mem]
   simp
 #align finset.range_sdiff_zero Finset.range_sdiff_zero
+-/
 
 end Finset
 
+#print Multiset.toFinset_map /-
 theorem Multiset.toFinset_map [DecidableEq α] [DecidableEq β] (f : α → β) (m : Multiset α) :
     (m.map f).toFinset = m.toFinset.image f :=
   Finset.val_inj.1 (Multiset.dedup_map_dedup_eq _ _).symm
 #align multiset.to_finset_map Multiset.toFinset_map
+-/
 
 namespace Equiv
 
@@ -863,10 +999,12 @@ protected def finsetCongr (e : α ≃ β) : Finset α ≃ Finset β
 #align equiv.finset_congr Equiv.finsetCongr
 -/
 
+#print Equiv.finsetCongr_apply /-
 @[simp]
 theorem finsetCongr_apply (e : α ≃ β) (s : Finset α) : e.finsetCongr s = s.map e.toEmbedding :=
   rfl
 #align equiv.finset_congr_apply Equiv.finsetCongr_apply
+-/
 
 #print Equiv.finsetCongr_refl /-
 @[simp]
@@ -874,21 +1012,27 @@ theorem finsetCongr_refl : (Equiv.refl α).finsetCongr = Equiv.refl _ := by ext;
 #align equiv.finset_congr_refl Equiv.finsetCongr_refl
 -/
 
+#print Equiv.finsetCongr_symm /-
 @[simp]
 theorem finsetCongr_symm (e : α ≃ β) : e.finsetCongr.symm = e.symm.finsetCongr :=
   rfl
 #align equiv.finset_congr_symm Equiv.finsetCongr_symm
+-/
 
+#print Equiv.finsetCongr_trans /-
 @[simp]
 theorem finsetCongr_trans (e : α ≃ β) (e' : β ≃ γ) :
     e.finsetCongr.trans e'.finsetCongr = (e.trans e').finsetCongr := by ext;
   simp [-Finset.mem_map, -Equiv.trans_toEmbedding]
 #align equiv.finset_congr_trans Equiv.finsetCongr_trans
+-/
 
+#print Equiv.finsetCongr_toEmbedding /-
 theorem finsetCongr_toEmbedding (e : α ≃ β) :
     e.finsetCongr.toEmbedding = (Finset.mapEmbedding e.toEmbedding).toEmbedding :=
   rfl
 #align equiv.finset_congr_to_embedding Equiv.finsetCongr_toEmbedding
+-/
 
 end Equiv
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/7e5137f579de09a059a5ce98f364a04e221aabf0

@@ -107,7 +107,6 @@ theorem coe_map_subset_range (f : α ↪ β) (s : Finset α) : (s.map f : Set β
   calc
     ↑(s.map f) = f '' s := coe_map f s
     _ ⊆ Set.range f := Set.image_subset_range f ↑s
-    
 #align finset.coe_map_subset_range Finset.coe_map_subset_range
 
 #print Finset.map_perm /-
@@ -482,7 +481,6 @@ theorem image_subset_iff : s.image f ⊆ t ↔ ∀ x ∈ s, f x ∈ t :=
   calc
     s.image f ⊆ t ↔ f '' ↑s ⊆ ↑t := by norm_cast
     _ ↔ _ := Set.image_subset_iff
-    
 #align finset.image_subset_iff Finset.image_subset_iff
 -/
 
@@ -498,7 +496,6 @@ theorem coe_image_subset_range : ↑(s.image f) ⊆ Set.range f :=
   calc
     ↑(s.image f) = f '' ↑s := coe_image
     _ ⊆ Set.range f := Set.image_subset_range f ↑s
-    
 #align finset.coe_image_subset_range Finset.coe_image_subset_range
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/5f25c089cb34db4db112556f23c50d12da81b297

@@ -113,7 +113,7 @@ theorem coe_map_subset_range (f : α ↪ β) (s : Finset α) : (s.map f : Set β
 #print Finset.map_perm /-
 /-- If the only elements outside `s` are those left fixed by `σ`, then mapping by `σ` has no effect.
 -/
-theorem map_perm {σ : Equiv.Perm α} (hs : { a | σ a ≠ a } ⊆ s) : s.map (σ : α ↪ α) = s :=
+theorem map_perm {σ : Equiv.Perm α} (hs : {a | σ a ≠ a} ⊆ s) : s.map (σ : α ↪ α) = s :=
   coe_injective <| (coe_map _ _).trans <| Set.image_perm hs
 #align finset.map_perm Finset.map_perm
 -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/cca40788df1b8755d5baf17ab2f27dacc2e17acb

@@ -274,7 +274,7 @@ theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
   by
   refine' disjoint_iff_inf_le.mpr _
   intro k hk
-  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk
+  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk 
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_left_embedding Finset.disjoint_range_addLeftEmbedding
@@ -284,7 +284,7 @@ theorem disjoint_range_addRightEmbedding (a b : ℕ) :
   by
   refine' disjoint_iff_inf_le.mpr _
   intro k hk
-  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk
+  simp only [exists_prop, mem_range, inf_eq_inter, mem_map, addLeftEmbedding_apply, mem_inter] at hk 
   obtain ⟨a, haQ, ha⟩ := hk.2
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_right_embedding Finset.disjoint_range_addRightEmbedding
@@ -786,7 +786,7 @@ subtype. -/
 theorem map_subtype_subset {t : Set α} (s : Finset t) : ↑(s.map (Embedding.subtype _)) ⊆ t :=
   by
   intro a ha
-  rw [mem_coe] at ha
+  rw [mem_coe] at ha 
   convert property_of_mem_map_subtype s ha
 #align finset.map_subtype_subset Finset.map_subtype_subset
 -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -164,11 +164,13 @@ theorem map_subset_map {s₁ s₂ : Finset α} : s₁.map f ⊆ s₂.map f ↔ s
     simp [subset_def, map_subset_map h]⟩
 #align finset.map_subset_map Finset.map_subset_map
 
+#print Finset.mapEmbedding /-
 /-- Associate to an embedding `f` from `α` to `β` the order embedding that maps a finset to its
 image under `f`. -/
 def mapEmbedding (f : α ↪ β) : Finset α ↪o Finset β :=
   OrderEmbedding.ofMapLEIff (map f) fun _ _ => map_subset_map
 #align finset.map_embedding Finset.mapEmbedding
+-/
 
 @[simp]
 theorem map_inj {s₁ s₂ : Finset α} : s₁.map f = s₂.map f ↔ s₁ = s₂ :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -58,23 +58,11 @@ def map (f : α ↪ β) (s : Finset α) : Finset β :=
 #align finset.map Finset.map
 -/
 
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 @[simp]
 theorem map_val (f : α ↪ β) (s : Finset α) : (map f s).1 = s.1.map f :=
   rfl
 #align finset.map_val Finset.map_val
 
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 @[simp]
 theorem map_empty (f : α ↪ β) : (∅ : Finset α).map f = ∅ :=
   rfl
@@ -82,87 +70,39 @@ theorem map_empty (f : α ↪ β) : (∅ : Finset α).map f = ∅ :=
 
 variable {f : α ↪ β} {s : Finset α}
 
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 @[simp]
 theorem mem_map {b : β} : b ∈ s.map f ↔ ∃ a ∈ s, f a = b :=
   mem_map.trans <| by simp only [exists_prop] <;> rfl
 #align finset.mem_map Finset.mem_map
 
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 @[simp]
 theorem mem_map_equiv {f : α ≃ β} {b : β} : b ∈ s.map f.toEmbedding ↔ f.symm b ∈ s := by
   rw [mem_map]; exact ⟨by rintro ⟨a, H, rfl⟩; simpa, fun h => ⟨_, h, by simp⟩⟩
 #align finset.mem_map_equiv Finset.mem_map_equiv
 
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 theorem mem_map' (f : α ↪ β) {a} {s : Finset α} : f a ∈ s.map f ↔ a ∈ s :=
   mem_map_of_injective f.2
 #align finset.mem_map' Finset.mem_map'
 
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 theorem mem_map_of_mem (f : α ↪ β) {a} {s : Finset α} : a ∈ s → f a ∈ s.map f :=
   (mem_map' _).2
 #align finset.mem_map_of_mem Finset.mem_map_of_mem
 
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 theorem forall_mem_map {f : α ↪ β} {s : Finset α} {p : ∀ a, a ∈ s.map f → Prop} :
     (∀ y ∈ s.map f, p y H) ↔ ∀ x ∈ s, p (f x) (mem_map_of_mem _ H) :=
   ⟨fun h y hy => h (f y) (mem_map_of_mem _ hy), fun h x hx => by
     obtain ⟨y, hy, rfl⟩ := mem_map.1 hx; exact h _ hy⟩
 #align finset.forall_mem_map Finset.forall_mem_map
 
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 theorem apply_coe_mem_map (f : α ↪ β) (s : Finset α) (x : s) : f x ∈ s.map f :=
   mem_map_of_mem f x.Prop
 #align finset.apply_coe_mem_map Finset.apply_coe_mem_map
 
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 @[simp, norm_cast]
 theorem coe_map (f : α ↪ β) (s : Finset α) : (s.map f : Set β) = f '' s :=
   Set.ext fun x => mem_map.trans Set.mem_image_iff_bex.symm
 #align finset.coe_map Finset.coe_map
 
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 theorem coe_map_subset_range (f : α ↪ β) (s : Finset α) : (s.map f : Set β) ⊆ Set.range f :=
   calc
     ↑(s.map f) = f '' s := coe_map f s
@@ -178,12 +118,6 @@ theorem map_perm {σ : Equiv.Perm α} (hs : { a | σ a ≠ a } ⊆ s) : s.map (
 #align finset.map_perm Finset.map_perm
 -/
 
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 theorem map_toFinset [DecidableEq α] [DecidableEq β] {s : Multiset α} :
     s.toFinset.map f = (s.map f).toFinset :=
   ext fun _ => by simp only [mem_map, Multiset.mem_map, exists_prop, Multiset.mem_toFinset]
@@ -203,33 +137,15 @@ theorem map_cast_heq {α β} (h : α = β) (s : Finset α) : HEq (s.map (Equiv.c
 #align finset.map_cast_heq Finset.map_cast_heq
 -/
 
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 theorem map_map (f : α ↪ β) (g : β ↪ γ) (s : Finset α) : (s.map f).map g = s.map (f.trans g) :=
   eq_of_veq <| by simp only [map_val, Multiset.map_map] <;> rfl
 #align finset.map_map Finset.map_map
 
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 theorem map_comm {β'} {f : β ↪ γ} {g : α ↪ β} {f' : α ↪ β'} {g' : β' ↪ γ}
     (h_comm : ∀ a, f (g a) = g' (f' a)) : (s.map g).map f = (s.map f').map g' := by
   simp_rw [map_map, embedding.trans, Function.comp, h_comm]
 #align finset.map_comm Finset.map_comm
 
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 theorem Function.Semiconj.finset_map {f : α ↪ β} {ga : α ↪ α} {gb : β ↪ β}
     (h : Function.Semiconj f ga gb) : Function.Semiconj (map f) (map ga) (map gb) := fun s =>
   map_comm h
@@ -242,57 +158,27 @@ theorem Function.Commute.finset_map {f g : α ↪ α} (h : Function.Commute f g)
 #align function.commute.finset_map Function.Commute.finset_map
 -/
 
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 @[simp]
 theorem map_subset_map {s₁ s₂ : Finset α} : s₁.map f ⊆ s₂.map f ↔ s₁ ⊆ s₂ :=
   ⟨fun h x xs => (mem_map' _).1 <| h <| (mem_map' f).2 xs, fun h => by
     simp [subset_def, map_subset_map h]⟩
 #align finset.map_subset_map Finset.map_subset_map
 
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 /-- Associate to an embedding `f` from `α` to `β` the order embedding that maps a finset to its
 image under `f`. -/
 def mapEmbedding (f : α ↪ β) : Finset α ↪o Finset β :=
   OrderEmbedding.ofMapLEIff (map f) fun _ _ => map_subset_map
 #align finset.map_embedding Finset.mapEmbedding
 
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 @[simp]
 theorem map_inj {s₁ s₂ : Finset α} : s₁.map f = s₂.map f ↔ s₁ = s₂ :=
   (mapEmbedding f).Injective.eq_iff
 #align finset.map_inj Finset.map_inj
 
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 theorem map_injective (f : α ↪ β) : Injective (map f) :=
   (mapEmbedding f).Injective
 #align finset.map_injective Finset.map_injective
 
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 @[simp]
 theorem mapEmbedding_apply : mapEmbedding f s = map f s :=
   rfl
@@ -305,23 +191,11 @@ theorem filter_map {p : β → Prop} [DecidablePred p] :
 #align finset.filter_map Finset.filter_map
 -/
 
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 theorem map_filter {f : α ≃ β} {p : α → Prop} [DecidablePred p] :
     (s.filterₓ p).map f.toEmbedding = (s.map f.toEmbedding).filterₓ (p ∘ f.symm) := by
   simp only [filter_map, Function.comp, Equiv.toEmbedding_apply, Equiv.symm_apply_apply]
 #align finset.map_filter Finset.map_filter
 
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 @[simp]
 theorem disjoint_map {s t : Finset α} (f : α ↪ β) : Disjoint (s.map f) (t.map f) ↔ Disjoint s t :=
   by
@@ -331,77 +205,38 @@ theorem disjoint_map {s t : Finset α} (f : α ↪ β) : Disjoint (s.map f) (t.m
   exact f.injective.ne (h _ ha _ hb)
 #align finset.disjoint_map Finset.disjoint_map
 
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 theorem map_disjUnion {f : α ↪ β} (s₁ s₂ : Finset α) (h) (h' := (disjoint_map _).mpr h) :
     (s₁.disjUnion s₂ h).map f = (s₁.map f).disjUnion (s₂.map f) h' :=
   eq_of_veq <| Multiset.map_add _ _ _
 #align finset.map_disj_union Finset.map_disjUnion
 
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 /-- A version of `finset.map_disj_union` for writing in the other direction. -/
 theorem map_disjUnion' {f : α ↪ β} (s₁ s₂ : Finset α) (h') (h := (disjoint_map _).mp h') :
     (s₁.disjUnion s₂ h).map f = (s₁.map f).disjUnion (s₂.map f) h' :=
   map_disjUnion _ _ _
 #align finset.map_disj_union' Finset.map_disjUnion'
 
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 theorem map_union [DecidableEq α] [DecidableEq β] {f : α ↪ β} (s₁ s₂ : Finset α) :
     (s₁ ∪ s₂).map f = s₁.map f ∪ s₂.map f :=
   coe_injective <| by simp only [coe_map, coe_union, Set.image_union]
 #align finset.map_union Finset.map_union
 
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 theorem map_inter [DecidableEq α] [DecidableEq β] {f : α ↪ β} (s₁ s₂ : Finset α) :
     (s₁ ∩ s₂).map f = s₁.map f ∩ s₂.map f :=
   coe_injective <| by simp only [coe_map, coe_inter, Set.image_inter f.injective]
 #align finset.map_inter Finset.map_inter
 
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 @[simp]
 theorem map_singleton (f : α ↪ β) (a : α) : map f {a} = {f a} :=
   coe_injective <| by simp only [coe_map, coe_singleton, Set.image_singleton]
 #align finset.map_singleton Finset.map_singleton
 
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 @[simp]
 theorem map_insert [DecidableEq α] [DecidableEq β] (f : α ↪ β) (a : α) (s : Finset α) :
     (insert a s).map f = insert (f a) (s.map f) := by
   simp only [insert_eq, map_union, map_singleton]
 #align finset.map_insert Finset.map_insert
 
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 @[simp]
 theorem map_cons (f : α ↪ β) (a : α) (s : Finset α) (ha : a ∉ s) :
     (cons a s ha).map f = cons (f a) (s.map f) (by simpa using ha) :=
@@ -432,12 +267,6 @@ theorem attach_map_val {s : Finset α} : s.attach.map (Embedding.subtype _) = s
 #align finset.attach_map_val Finset.attach_map_val
 -/
 
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 theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
     Disjoint (range a) (map (addLeftEmbedding a) (range b)) :=
   by
@@ -448,12 +277,6 @@ theorem disjoint_range_addLeftEmbedding (a b : ℕ) :
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_left_embedding Finset.disjoint_range_addLeftEmbedding
 
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 theorem disjoint_range_addRightEmbedding (a b : ℕ) :
     Disjoint (range a) (map (addRightEmbedding a) (range b)) :=
   by
@@ -464,12 +287,6 @@ theorem disjoint_range_addRightEmbedding (a b : ℕ) :
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_right_embedding Finset.disjoint_range_addRightEmbedding
 
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 theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h} :
     (s.map f).disjUnionₓ t h =
       s.disjUnionₓ (fun a => t (f a)) fun a ha b hb hab =>
@@ -477,9 +294,6 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
   eq_of_veq <| Multiset.bind_map _ _ _
 #align finset.map_disj_Union Finset.map_disjiUnion
 
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 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =
       s.disjUnionₓ (fun a => (t a).map f) fun a ha b hb hab =>
@@ -494,12 +308,6 @@ theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h
 
 end Map
 
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 theorem range_add_one' (n : ℕ) :
     range (n + 1) = insert 0 ((range n).map ⟨fun i => i + 1, fun i j => Nat.succ.inj⟩) := by
   ext (⟨⟩ | ⟨n⟩) <;> simp [Nat.succ_eq_add_one, Nat.zero_lt_succ n]
@@ -519,12 +327,6 @@ def image (f : α → β) (s : Finset α) : Finset β :=
 #align finset.image Finset.image
 -/
 
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 @[simp]
 theorem image_val (f : α → β) (s : Finset α) : (image f s).1 = (s.1.map f).dedup :=
   rfl
@@ -539,23 +341,11 @@ theorem image_empty (f : α → β) : (∅ : Finset α).image f = ∅ :=
 
 variable {f g : α → β} {s : Finset α} {t : Finset β} {a : α} {b c : β}
 
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 @[simp]
 theorem mem_image : b ∈ s.image f ↔ ∃ a ∈ s, f a = b := by
   simp only [mem_def, image_val, mem_dedup, Multiset.mem_map, exists_prop]
 #align finset.mem_image Finset.mem_image
 
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 theorem mem_image_of_mem (f : α → β) {a} (h : a ∈ s) : f a ∈ s.image f :=
   mem_image.2 ⟨_, h, rfl⟩
 #align finset.mem_image_of_mem Finset.mem_image_of_mem
@@ -589,22 +379,10 @@ instance canLift (c) (p) [CanLift β α c p] :
 #align finset.can_lift Finset.canLift
 -/
 
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-Case conversion may be inaccurate. Consider using '#align finset.image_congr Finset.image_congrₓ'. -/
 theorem image_congr (h : (s : Set α).EqOn f g) : Finset.image f s = Finset.image g s := by ext;
   simp_rw [mem_image]; exact bex_congr fun x hx => by rw [h hx]
 #align finset.image_congr Finset.image_congr
 
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 theorem Function.Injective.mem_finset_image (hf : Injective f) : f a ∈ s.image f ↔ a ∈ s :=
   by
   refine' ⟨fun h => _, Finset.mem_image_of_mem f⟩
@@ -612,12 +390,6 @@ theorem Function.Injective.mem_finset_image (hf : Injective f) : f a ∈ s.image
   exact hf HEq ▸ hy
 #align function.injective.mem_finset_image Function.Injective.mem_finset_image
 
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 theorem filter_mem_image_eq_image (f : α → β) (s : Finset α) (t : Finset β) (h : ∀ x ∈ s, f x ∈ t) :
     (t.filterₓ fun y => y ∈ s.image f) = s.image f :=
   by
@@ -626,12 +398,6 @@ theorem filter_mem_image_eq_image (f : α → β) (s : Finset α) (t : Finset β
   rintro x xel rfl; exact h _ xel
 #align finset.filter_mem_image_eq_image Finset.filter_mem_image_eq_image
 
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 theorem fiber_nonempty_iff_mem_image (f : α → β) (s : Finset α) (y : β) :
     (s.filterₓ fun x => f x = y).Nonempty ↔ y ∈ s.image f := by simp [Finset.Nonempty]
 #align finset.fiber_nonempty_iff_mem_image Finset.fiber_nonempty_iff_mem_image
@@ -643,12 +409,6 @@ theorem coe_image {f : α → β} : ↑(s.image f) = f '' ↑s :=
 #align finset.coe_image Finset.coe_image
 -/
 
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 protected theorem Nonempty.image (h : s.Nonempty) (f : α → β) : (s.image f).Nonempty :=
   let ⟨a, ha⟩ := h
   ⟨f a, mem_image_of_mem f ha⟩
@@ -664,22 +424,10 @@ theorem Nonempty.image_iff (f : α → β) : (s.image f).Nonempty ↔ s.Nonempty
 #align finset.nonempty.image_iff Finset.Nonempty.image_iff
 -/
 
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 theorem image_toFinset [DecidableEq α] {s : Multiset α} : s.toFinset.image f = (s.map f).toFinset :=
   ext fun _ => by simp only [mem_image, Multiset.mem_toFinset, exists_prop, Multiset.mem_map]
 #align finset.image_to_finset Finset.image_toFinset
 
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 theorem image_val_of_injOn (H : Set.InjOn f s) : (image f s).1 = s.1.map f :=
   (s.2.map_onₓ H).dedup
 #align finset.image_val_of_inj_on Finset.image_val_of_injOn
@@ -711,12 +459,6 @@ theorem image_comm {β'} [DecidableEq β'] [DecidableEq γ] {f : β → γ} {g :
 #align finset.image_comm Finset.image_comm
 -/
 
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 theorem Function.Semiconj.finset_image [DecidableEq α] {f : α → β} {ga : α → α} {gb : β → β}
     (h : Function.Semiconj f ga gb) : Function.Semiconj (image f) (image ga) (image gb) := fun s =>
   image_comm h
@@ -729,12 +471,6 @@ theorem Function.Commute.finset_image [DecidableEq α] {f g : α → α} (h : Fu
 #align function.commute.finset_image Function.Commute.finset_image
 -/
 
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 theorem image_subset_image {s₁ s₂ : Finset α} (h : s₁ ⊆ s₂) : s₁.image f ⊆ s₂.image f := by
   simp only [subset_def, image_val, subset_dedup', dedup_subset', Multiset.map_subset_map h]
 #align finset.image_subset_image Finset.image_subset_image
@@ -748,21 +484,9 @@ theorem image_subset_iff : s.image f ⊆ t ↔ ∀ x ∈ s, f x ∈ t :=
 #align finset.image_subset_iff Finset.image_subset_iff
 -/
 
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 theorem image_mono (f : α → β) : Monotone (Finset.image f) := fun _ _ => image_subset_image
 #align finset.image_mono Finset.image_mono
 
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 theorem image_subset_image_iff {t : Finset α} (hf : Injective f) : s.image f ⊆ t.image f ↔ s ⊆ t :=
   by simp_rw [← coe_subset]; push_cast ; exact Set.image_subset_image_iff hf
 #align finset.image_subset_image_iff Finset.image_subset_image_iff
@@ -787,47 +511,23 @@ theorem image_filter {p : β → Prop} [DecidablePred p] :
 #align finset.image_filter Finset.image_filter
 -/
 
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 theorem image_union [DecidableEq α] {f : α → β} (s₁ s₂ : Finset α) :
     (s₁ ∪ s₂).image f = s₁.image f ∪ s₂.image f :=
   ext fun _ => by simp only [mem_image, mem_union, exists_prop, or_and_right, exists_or]
 #align finset.image_union Finset.image_union
 
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 theorem image_inter_subset [DecidableEq α] (f : α → β) (s t : Finset α) :
     (s ∩ t).image f ⊆ s.image f ∩ t.image f :=
   subset_inter (image_subset_image <| inter_subset_left _ _) <|
     image_subset_image <| inter_subset_right _ _
 #align finset.image_inter_subset Finset.image_inter_subset
 
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 theorem image_inter_of_injOn [DecidableEq α] {f : α → β} (s t : Finset α)
     (hf : Set.InjOn f (s ∪ t)) : (s ∩ t).image f = s.image f ∩ t.image f :=
   coe_injective <| by push_cast ;
     exact Set.image_inter_on fun a ha b hb => hf (Or.inr ha) <| Or.inl hb
 #align finset.image_inter_of_inj_on Finset.image_inter_of_injOn
 
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 theorem image_inter [DecidableEq α] (s₁ s₂ : Finset α) (hf : Injective f) :
     (s₁ ∩ s₂).image f = s₁.image f ∩ s₂.image f :=
   image_inter_of_injOn _ _ <| hf.InjOn _
@@ -840,24 +540,12 @@ theorem image_singleton (f : α → β) (a : α) : image f {a} = {f a} :=
 #align finset.image_singleton Finset.image_singleton
 -/
 
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 @[simp]
 theorem image_insert [DecidableEq α] (f : α → β) (a : α) (s : Finset α) :
     (insert a s).image f = insert (f a) (s.image f) := by
   simp only [insert_eq, image_singleton, image_union]
 #align finset.image_insert Finset.image_insert
 
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 theorem erase_image_subset_image_erase [DecidableEq α] (f : α → β) (s : Finset α) (a : α) :
     (s.image f).eraseₓ (f a) ⊆ (s.eraseₓ a).image f :=
   by
@@ -866,12 +554,6 @@ theorem erase_image_subset_image_erase [DecidableEq α] (f : α → β) (s : Fin
   exact ⟨_, ⟨ne_of_apply_ne f hb, hx⟩, rfl⟩
 #align finset.erase_image_subset_image_erase Finset.erase_image_subset_image_erase
 
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 @[simp]
 theorem image_erase [DecidableEq α] {f : α → β} (hf : Injective f) (s : Finset α) (a : α) :
     (s.eraseₓ a).image f = (s.image f).eraseₓ (f a) :=
@@ -890,34 +572,16 @@ theorem image_eq_empty : s.image f = ∅ ↔ s = ∅ :=
 #align finset.image_eq_empty Finset.image_eq_empty
 -/
 
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 theorem image_sdiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s \ t).image f = s.image f \ t.image f :=
   coe_injective <| by push_cast ; exact Set.image_diff hf _ _
 #align finset.image_sdiff Finset.image_sdiff
 
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 theorem image_symmDiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s ∆ t).image f = s.image f ∆ t.image f :=
   coe_injective <| by push_cast ; exact Set.image_symm_diff hf _ _
 #align finset.image_symm_diff Finset.image_symmDiff
 
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 @[simp]
 theorem Disjoint.of_image_finset {s t : Finset α} {f : α → β}
     (h : Disjoint (s.image f) (t.image f)) : Disjoint s t :=
@@ -957,12 +621,6 @@ theorem mem_range_iff_mem_finset_range_of_mod_eq [DecidableEq α] {f : ℤ → 
 #align finset.mem_range_iff_mem_finset_range_of_mod_eq Finset.mem_range_iff_mem_finset_range_of_mod_eq
 -/
 
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 theorem range_add (a b : ℕ) : range (a + b) = range a ∪ (range b).map (addLeftEmbedding a) := by
   rw [← val_inj, union_val]; exact Multiset.range_add_eq_union a b
 #align finset.range_add Finset.range_add
@@ -983,12 +641,6 @@ theorem attach_image_val [DecidableEq α] {s : Finset α} : s.attach.image coe =
 #align finset.attach_image_coe Finset.attach_image_val
 -/
 
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 @[simp]
 theorem attach_insert [DecidableEq α] {a : α} {s : Finset α} :
     attach (insert a s) =
@@ -1001,82 +653,40 @@ theorem attach_insert [DecidableEq α] {a : α} {s : Finset α} :
       fun _ => Finset.mem_attach _ _⟩
 #align finset.attach_insert Finset.attach_insert
 
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 theorem map_eq_image (f : α ↪ β) (s : Finset α) : s.map f = s.image f :=
   eq_of_veq (s.map f).2.dedup.symm
 #align finset.map_eq_image Finset.map_eq_image
 
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 @[simp]
 theorem disjoint_image {s t : Finset α} {f : α → β} (hf : Injective f) :
     Disjoint (s.image f) (t.image f) ↔ Disjoint s t := by
   convert disjoint_map ⟨_, hf⟩ <;> simp [map_eq_image]
 #align finset.disjoint_image Finset.disjoint_image
 
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 theorem image_const {s : Finset α} (h : s.Nonempty) (b : β) : (s.image fun a => b) = singleton b :=
   ext fun b' => by
     simp only [mem_image, exists_prop, exists_and_right, h.bex, true_and_iff, mem_singleton,
       eq_comm]
 #align finset.image_const Finset.image_const
 
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 @[simp]
 theorem map_erase [DecidableEq α] (f : α ↪ β) (s : Finset α) (a : α) :
     (s.eraseₓ a).map f = (s.map f).eraseₓ (f a) := by simp_rw [map_eq_image];
   exact s.image_erase f.2 a
 #align finset.map_erase Finset.map_erase
 
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 theorem image_biUnion [DecidableEq γ] {f : α → β} {s : Finset α} {t : β → Finset γ} :
     (s.image f).biUnion t = s.biUnion fun a => t (f a) :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [image_insert, bUnion_insert, ih]
 #align finset.image_bUnion Finset.image_biUnion
 
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 theorem biUnion_image [DecidableEq γ] {s : Finset α} {t : α → Finset β} {f : β → γ} :
     (s.biUnion t).image f = s.biUnion fun a => (t a).image f :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [bUnion_insert, image_union, ih]
 #align finset.bUnion_image Finset.biUnion_image
 
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 theorem image_biUnion_filter_eq [DecidableEq α] (s : Finset β) (g : β → α) :
     ((s.image g).biUnion fun a => s.filterₓ fun c => g c = a) = s :=
   biUnion_filter_eq_of_maps_to fun x => mem_image_of_mem g
@@ -1206,12 +816,6 @@ theorem fin_mono {n} : Monotone (Finset.fin n) := fun s t h x => by simpa using
 #align finset.fin_mono Finset.fin_mono
 -/
 
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 @[simp]
 theorem fin_map {n} {s : Finset ℕ} : (s.Fin n).map Fin.valEmbedding = s.filterₓ (· < n) := by
   simp [Finset.fin, Finset.map_map]
@@ -1231,12 +835,6 @@ theorem subset_image_iff [DecidableEq β] {s : Set α} {t : Finset β} {f : α 
 #align finset.subset_image_iff Finset.subset_image_iff
 -/
 
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 theorem range_sdiff_zero {n : ℕ} : range (n + 1) \ {0} = (range n).image Nat.succ :=
   by
   induction' n with k hk
@@ -1248,12 +846,6 @@ theorem range_sdiff_zero {n : ℕ} : range (n + 1) \ {0} = (range n).image Nat.s
 
 end Finset
 
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 theorem Multiset.toFinset_map [DecidableEq α] [DecidableEq β] (f : α → β) (m : Multiset α) :
     (m.map f).toFinset = m.toFinset.image f :=
   Finset.val_inj.1 (Multiset.dedup_map_dedup_eq _ _).symm
@@ -1272,12 +864,6 @@ protected def finsetCongr (e : α ≃ β) : Finset α ≃ Finset β
 #align equiv.finset_congr Equiv.finsetCongr
 -/
 
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 @[simp]
 theorem finsetCongr_apply (e : α ≃ β) (s : Finset α) : e.finsetCongr s = s.map e.toEmbedding :=
   rfl
@@ -1289,35 +875,17 @@ theorem finsetCongr_refl : (Equiv.refl α).finsetCongr = Equiv.refl _ := by ext;
 #align equiv.finset_congr_refl Equiv.finsetCongr_refl
 -/
 
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 @[simp]
 theorem finsetCongr_symm (e : α ≃ β) : e.finsetCongr.symm = e.symm.finsetCongr :=
   rfl
 #align equiv.finset_congr_symm Equiv.finsetCongr_symm
 
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 @[simp]
 theorem finsetCongr_trans (e : α ≃ β) (e' : β ≃ γ) :
     e.finsetCongr.trans e'.finsetCongr = (e.trans e').finsetCongr := by ext;
   simp [-Finset.mem_map, -Equiv.trans_toEmbedding]
 #align equiv.finset_congr_trans Equiv.finsetCongr_trans
 
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 theorem finsetCongr_toEmbedding (e : α ≃ β) :
     e.finsetCongr.toEmbedding = (Finset.mapEmbedding e.toEmbedding).toEmbedding :=
   rfl

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -100,13 +100,8 @@ but is expected to have type
   forall {α : Type.{u2}} {β : Type.{u1}} {s : Finset.{u2} α} {f : Equiv.{succ u2, succ u1} α β} {b : β}, Iff (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) b (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) s)) (Membership.mem.{u2, u2} ((fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) b) (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (_x : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f) b) s)
 Case conversion may be inaccurate. Consider using '#align finset.mem_map_equiv Finset.mem_map_equivₓ'. -/
 @[simp]
-theorem mem_map_equiv {f : α ≃ β} {b : β} : b ∈ s.map f.toEmbedding ↔ f.symm b ∈ s :=
-  by
-  rw [mem_map]
-  exact
-    ⟨by
-      rintro ⟨a, H, rfl⟩
-      simpa, fun h => ⟨_, h, by simp⟩⟩
+theorem mem_map_equiv {f : α ≃ β} {b : β} : b ∈ s.map f.toEmbedding ↔ f.symm b ∈ s := by
+  rw [mem_map]; exact ⟨by rintro ⟨a, H, rfl⟩; simpa, fun h => ⟨_, h, by simp⟩⟩
 #align finset.mem_map_equiv Finset.mem_map_equiv
 
 /- warning: finset.mem_map' -> Finset.mem_map' is a dubious translation:
@@ -137,10 +132,8 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align finset.forall_mem_map Finset.forall_mem_mapₓ'. -/
 theorem forall_mem_map {f : α ↪ β} {s : Finset α} {p : ∀ a, a ∈ s.map f → Prop} :
     (∀ y ∈ s.map f, p y H) ↔ ∀ x ∈ s, p (f x) (mem_map_of_mem _ H) :=
-  ⟨fun h y hy => h (f y) (mem_map_of_mem _ hy), fun h x hx =>
-    by
-    obtain ⟨y, hy, rfl⟩ := mem_map.1 hx
-    exact h _ hy⟩
+  ⟨fun h y hy => h (f y) (mem_map_of_mem _ hy), fun h x hx => by
+    obtain ⟨y, hy, rfl⟩ := mem_map.1 hx; exact h _ hy⟩
 #align finset.forall_mem_map Finset.forall_mem_map
 
 /- warning: finset.apply_coe_mem_map -> Finset.apply_coe_mem_map is a dubious translation:
@@ -206,9 +199,7 @@ theorem map_refl : s.map (Embedding.refl _) = s :=
 #print Finset.map_cast_heq /-
 @[simp]
 theorem map_cast_heq {α β} (h : α = β) (s : Finset α) : HEq (s.map (Equiv.cast h).toEmbedding) s :=
-  by
-  subst h
-  simp
+  by subst h; simp
 #align finset.map_cast_heq Finset.map_cast_heq
 -/
 
@@ -577,11 +568,8 @@ theorem forall_image {p : β → Prop} : (∀ b ∈ s.image f, p b) ↔ ∀ a 
 
 #print Finset.mem_image_const /-
 @[simp]
-theorem mem_image_const : c ∈ s.image (const α b) ↔ s.Nonempty ∧ b = c :=
-  by
-  rw [mem_image]
-  simp only [exists_prop, const_apply, exists_and_right]
-  rfl
+theorem mem_image_const : c ∈ s.image (const α b) ↔ s.Nonempty ∧ b = c := by rw [mem_image];
+  simp only [exists_prop, const_apply, exists_and_right]; rfl
 #align finset.mem_image_const Finset.mem_image_const
 -/
 
@@ -607,11 +595,8 @@ lean 3 declaration is
 but is expected to have type
   forall {α : Type.{u2}} {β : Type.{u1}} [_inst_1 : DecidableEq.{succ u1} β] {f : α -> β} {g : α -> β} {s : Finset.{u2} α}, (Set.EqOn.{u2, u1} α β f g (Finset.toSet.{u2} α s)) -> (Eq.{succ u1} (Finset.{u1} β) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) f s) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) g s))
 Case conversion may be inaccurate. Consider using '#align finset.image_congr Finset.image_congrₓ'. -/
-theorem image_congr (h : (s : Set α).EqOn f g) : Finset.image f s = Finset.image g s :=
-  by
-  ext
-  simp_rw [mem_image]
-  exact bex_congr fun x hx => by rw [h hx]
+theorem image_congr (h : (s : Set α).EqOn f g) : Finset.image f s = Finset.image g s := by ext;
+  simp_rw [mem_image]; exact bex_congr fun x hx => by rw [h hx]
 #align finset.image_congr Finset.image_congr
 
 /- warning: function.injective.mem_finset_image -> Function.Injective.mem_finset_image is a dubious translation:
@@ -636,11 +621,9 @@ Case conversion may be inaccurate. Consider using '#align finset.filter_mem_imag
 theorem filter_mem_image_eq_image (f : α → β) (s : Finset α) (t : Finset β) (h : ∀ x ∈ s, f x ∈ t) :
     (t.filterₓ fun y => y ∈ s.image f) = s.image f :=
   by
-  ext
-  rw [mem_filter, mem_image]
+  ext; rw [mem_filter, mem_image]
   simp only [and_imp, exists_prop, and_iff_right_iff_imp, exists_imp]
-  rintro x xel rfl
-  exact h _ xel
+  rintro x xel rfl; exact h _ xel
 #align finset.filter_mem_image_eq_image Finset.filter_mem_image_eq_image
 
 /- warning: finset.fiber_nonempty_iff_mem_image -> Finset.fiber_nonempty_iff_mem_image is a dubious translation:
@@ -781,10 +764,7 @@ but is expected to have type
   forall {α : Type.{u2}} {β : Type.{u1}} [_inst_1 : DecidableEq.{succ u1} β] {f : α -> β} {s : Finset.{u2} α} {t : Finset.{u2} α}, (Function.Injective.{succ u2, succ u1} α β f) -> (Iff (HasSubset.Subset.{u1} (Finset.{u1} β) (Finset.instHasSubsetFinset.{u1} β) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) f s) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) f t)) (HasSubset.Subset.{u2} (Finset.{u2} α) (Finset.instHasSubsetFinset.{u2} α) s t))
 Case conversion may be inaccurate. Consider using '#align finset.image_subset_image_iff Finset.image_subset_image_iffₓ'. -/
 theorem image_subset_image_iff {t : Finset α} (hf : Injective f) : s.image f ⊆ t.image f ↔ s ⊆ t :=
-  by
-  simp_rw [← coe_subset]
-  push_cast
-  exact Set.image_subset_image_iff hf
+  by simp_rw [← coe_subset]; push_cast ; exact Set.image_subset_image_iff hf
 #align finset.image_subset_image_iff Finset.image_subset_image_iff
 
 #print Finset.coe_image_subset_range /-
@@ -838,8 +818,7 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align finset.image_inter_of_inj_on Finset.image_inter_of_injOnₓ'. -/
 theorem image_inter_of_injOn [DecidableEq α] {f : α → β} (s t : Finset α)
     (hf : Set.InjOn f (s ∪ t)) : (s ∩ t).image f = s.image f ∩ t.image f :=
-  coe_injective <| by
-    push_cast
+  coe_injective <| by push_cast ;
     exact Set.image_inter_on fun a ha b hb => hf (Or.inr ha) <| Or.inl hb
 #align finset.image_inter_of_inj_on Finset.image_inter_of_injOn
 
@@ -919,9 +898,7 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align finset.image_sdiff Finset.image_sdiffₓ'. -/
 theorem image_sdiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s \ t).image f = s.image f \ t.image f :=
-  coe_injective <| by
-    push_cast
-    exact Set.image_diff hf _ _
+  coe_injective <| by push_cast ; exact Set.image_diff hf _ _
 #align finset.image_sdiff Finset.image_sdiff
 
 /- warning: finset.image_symm_diff -> Finset.image_symmDiff is a dubious translation:
@@ -932,9 +909,7 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align finset.image_symm_diff Finset.image_symmDiffₓ'. -/
 theorem image_symmDiff [DecidableEq α] {f : α → β} (s t : Finset α) (hf : Injective f) :
     (s ∆ t).image f = s.image f ∆ t.image f :=
-  coe_injective <| by
-    push_cast
-    exact Set.image_symm_diff hf _ _
+  coe_injective <| by push_cast ; exact Set.image_symm_diff hf _ _
 #align finset.image_symm_diff Finset.image_symmDiff
 
 /- warning: disjoint.of_image_finset -> Disjoint.of_image_finset is a dubious translation:
@@ -988,10 +963,8 @@ lean 3 declaration is
 but is expected to have type
   forall (a : Nat) (b : Nat), Eq.{1} (Finset.{0} Nat) (Finset.range (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) a b)) (Union.union.{0} (Finset.{0} Nat) (Finset.instUnionFinset.{0} Nat (fun (a : Nat) (b : Nat) => instDecidableEqNat a b)) (Finset.range a) (Finset.map.{0, 0} Nat Nat (addLeftEmbedding.{0} Nat (AddLeftCancelMonoid.toAddLeftCancelSemigroup.{0} Nat (AddCancelCommMonoid.toAddLeftCancelMonoid.{0} Nat (OrderedCancelAddCommMonoid.toCancelAddCommMonoid.{0} Nat (StrictOrderedSemiring.toOrderedCancelAddCommMonoid.{0} Nat Nat.strictOrderedSemiring)))) a) (Finset.range b)))
 Case conversion may be inaccurate. Consider using '#align finset.range_add Finset.range_addₓ'. -/
-theorem range_add (a b : ℕ) : range (a + b) = range a ∪ (range b).map (addLeftEmbedding a) :=
-  by
-  rw [← val_inj, union_val]
-  exact Multiset.range_add_eq_union a b
+theorem range_add (a b : ℕ) : range (a + b) = range a ∪ (range b).map (addLeftEmbedding a) := by
+  rw [← val_inj, union_val]; exact Multiset.range_add_eq_union a b
 #align finset.range_add Finset.range_add
 
 #print Finset.attach_image_val /-
@@ -1070,9 +1043,7 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align finset.map_erase Finset.map_eraseₓ'. -/
 @[simp]
 theorem map_erase [DecidableEq α] (f : α ↪ β) (s : Finset α) (a : α) :
-    (s.eraseₓ a).map f = (s.map f).eraseₓ (f a) :=
-  by
-  simp_rw [map_eq_image]
+    (s.eraseₓ a).map f = (s.map f).eraseₓ (f a) := by simp_rw [map_eq_image];
   exact s.image_erase f.2 a
 #align finset.map_erase Finset.map_erase
 
@@ -1251,9 +1222,7 @@ theorem subset_image_iff [DecidableEq β] {s : Set α} {t : Finset β} {f : α 
     ↑t ⊆ f '' s ↔ ∃ s' : Finset α, ↑s' ⊆ s ∧ s'.image f = t :=
   by
   constructor; swap
-  · rintro ⟨t, ht, rfl⟩
-    rw [coe_image]
-    exact Set.image_subset f ht
+  · rintro ⟨t, ht, rfl⟩; rw [coe_image]; exact Set.image_subset f ht
   intro h
   letI : CanLift β s (f ∘ coe) fun y => y ∈ f '' s := ⟨fun y ⟨x, hxt, hy⟩ => ⟨⟨x, hxt⟩, hy⟩⟩
   lift t to Finset s using h
@@ -1316,10 +1285,7 @@ theorem finsetCongr_apply (e : α ≃ β) (s : Finset α) : e.finsetCongr s = s.
 
 #print Equiv.finsetCongr_refl /-
 @[simp]
-theorem finsetCongr_refl : (Equiv.refl α).finsetCongr = Equiv.refl _ :=
-  by
-  ext
-  simp
+theorem finsetCongr_refl : (Equiv.refl α).finsetCongr = Equiv.refl _ := by ext; simp
 #align equiv.finset_congr_refl Equiv.finsetCongr_refl
 -/
 
@@ -1342,9 +1308,7 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align equiv.finset_congr_trans Equiv.finsetCongr_transₓ'. -/
 @[simp]
 theorem finsetCongr_trans (e : α ≃ β) (e' : β ≃ γ) :
-    e.finsetCongr.trans e'.finsetCongr = (e.trans e').finsetCongr :=
-  by
-  ext
+    e.finsetCongr.trans e'.finsetCongr = (e.trans e').finsetCongr := by ext;
   simp [-Finset.mem_map, -Equiv.trans_toEmbedding]
 #align equiv.finset_congr_trans Equiv.finsetCongr_trans
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -409,10 +409,7 @@ theorem map_insert [DecidableEq α] [DecidableEq β] (f : α ↪ β) (a : α) (s
 #align finset.map_insert Finset.map_insert
 
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 Case conversion may be inaccurate. Consider using '#align finset.map_cons Finset.map_consₓ'. -/
 @[simp]
 theorem map_cons (f : α ↪ β) (a : α) (s : Finset α) (ha : a ∉ s) :
@@ -490,10 +487,7 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 #align finset.map_disj_Union Finset.map_disjiUnion
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/e1a18cad9cd462973d760af7de36b05776b8811c

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/ef95945cd48c932c9e034872bd25c3c220d9c946

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/8d33f09cd7089ecf074b4791907588245aec5d1b

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/75e7fca56381d056096ce5d05e938f63a6567828

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/1b0a28e1c93409dbf6d69526863cd9984ef652ce

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/33c67ae661dd8988516ff7f247b0be3018cdd952

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/f51de8769c34652d82d1c8e5f8f18f8374782bed

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) => Eq.ndrec.{0, succ u2} β xb (fun (xa : β) => (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) -> False) (fun (hfa : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t a)) (hxa : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/95a87616d63b3cb49d3fe678d416fbe9c4217bf4

@@ -97,7 +97,7 @@ theorem mem_map {b : β} : b ∈ s.map f ↔ ∃ a ∈ s, f a = b :=
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} {s : Finset.{u1} α} {f : Equiv.{succ u1, succ u2} α β} {b : β}, Iff (Membership.Mem.{u2, u2} β (Finset.{u2} β) (Finset.hasMem.{u2} β) b (Finset.map.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β f) s)) (Membership.Mem.{u1, u1} α (Finset.{u1} α) (Finset.hasMem.{u1} α) (coeFn.{max 1 (max (succ u2) (succ u1)) (succ u1) (succ u2), max (succ u2) (succ u1)} (Equiv.{succ u2, succ u1} β α) (fun (_x : Equiv.{succ u2, succ u1} β α) => β -> α) (Equiv.hasCoeToFun.{succ u2, succ u1} β α) (Equiv.symm.{succ u1, succ u2} α β f) b) s)
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} {s : Finset.{u2} α} {f : Equiv.{succ u2, succ u1} α β} {b : β}, Iff (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) b (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) s)) (Membership.mem.{u2, u2} ((fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : β) => α) b) (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (_x : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : β) => α) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f) b) s)
+  forall {α : Type.{u2}} {β : Type.{u1}} {s : Finset.{u2} α} {f : Equiv.{succ u2, succ u1} α β} {b : β}, Iff (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) b (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) s)) (Membership.mem.{u2, u2} ((fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) b) (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (_x : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f) b) s)
 Case conversion may be inaccurate. Consider using '#align finset.mem_map_equiv Finset.mem_map_equivₓ'. -/
 @[simp]
 theorem mem_map_equiv {f : α ≃ β} {b : β} : b ∈ s.map f.toEmbedding ↔ f.symm b ∈ s :=
@@ -300,7 +300,7 @@ theorem map_injective (f : α ↪ β) : Injective (map f) :=
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} (Finset.{u2} β) (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (fun (_x : RelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) => (Finset.{u1} α) -> (Finset.{u2} β)) (RelEmbedding.hasCoeToFun.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
 but is expected to have type
-  forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} ((fun (x._@.Mathlib.Order.RelIso.Basic._hyg.867 : Finset.{u1} α) => Finset.{u2} β) s) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (fun (_x : Finset.{u1} α) => (fun (x._@.Mathlib.Order.RelIso.Basic._hyg.867 : Finset.{u1} α) => Finset.{u2} β) _x) (RelHomClass.toFunLike.{max u1 u2, u1, u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697) (RelEmbedding.instRelHomClassRelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
+  forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} ((fun (x._@.Mathlib.Order.RelIso.Basic._hyg.869 : Finset.{u1} α) => Finset.{u2} β) s) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (fun (_x : Finset.{u1} α) => (fun (x._@.Mathlib.Order.RelIso.Basic._hyg.869 : Finset.{u1} α) => Finset.{u2} β) _x) (RelHomClass.toFunLike.{max u1 u2, u1, u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.684 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.682 x._@.Mathlib.Order.Hom.Basic._hyg.684) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.699 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.697 x._@.Mathlib.Order.Hom.Basic._hyg.699) (RelEmbedding.instRelHomClassRelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.684 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.682 x._@.Mathlib.Order.Hom.Basic._hyg.684) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.699 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.697 x._@.Mathlib.Order.Hom.Basic._hyg.699))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
 Case conversion may be inaccurate. Consider using '#align finset.map_embedding_apply Finset.mapEmbedding_applyₓ'. -/
 @[simp]
 theorem mapEmbedding_apply : mapEmbedding f s = map f s :=
@@ -318,7 +318,7 @@ theorem filter_map {p : β → Prop} [DecidablePred p] :
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} {s : Finset.{u1} α} {f : Equiv.{succ u1, succ u2} α β} {p : α -> Prop} [_inst_1 : DecidablePred.{succ u1} α p], Eq.{succ u2} (Finset.{u2} β) (Finset.map.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β f) (Finset.filter.{u1} α p (fun (a : α) => _inst_1 a) s)) (Finset.filter.{u2} β (Function.comp.{succ u2, succ u1, 1} β α Prop p (coeFn.{max 1 (max (succ u2) (succ u1)) (succ u1) (succ u2), max (succ u2) (succ u1)} (Equiv.{succ u2, succ u1} β α) (fun (_x : Equiv.{succ u2, succ u1} β α) => β -> α) (Equiv.hasCoeToFun.{succ u2, succ u1} β α) (Equiv.symm.{succ u1, succ u2} α β f))) (fun (a : β) => _inst_1 (coeFn.{max 1 (max (succ u2) (succ u1)) (succ u1) (succ u2), max (succ u2) (succ u1)} (Equiv.{succ u2, succ u1} β α) (fun (_x : Equiv.{succ u2, succ u1} β α) => β -> α) (Equiv.hasCoeToFun.{succ u2, succ u1} β α) (Equiv.symm.{succ u1, succ u2} α β f) a)) (Finset.map.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β f) s))
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} {s : Finset.{u2} α} {f : Equiv.{succ u2, succ u1} α β} {p : α -> Prop} [_inst_1 : DecidablePred.{succ u2} α p], Eq.{succ u1} (Finset.{u1} β) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) (Finset.filter.{u2} α p (fun (a : α) => _inst_1 a) s)) (Finset.filter.{u1} β (Function.comp.{succ u1, succ u2, 1} β α Prop p (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (_x : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : β) => α) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f))) (fun (a : β) => instDecidablePredCompProp.{succ u1, succ u2} β α p (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (a : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : β) => α) a) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f)) (fun (a : α) => _inst_1 a) a) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) s))
+  forall {α : Type.{u2}} {β : Type.{u1}} {s : Finset.{u2} α} {f : Equiv.{succ u2, succ u1} α β} {p : α -> Prop} [_inst_1 : DecidablePred.{succ u2} α p], Eq.{succ u1} (Finset.{u1} β) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) (Finset.filter.{u2} α p (fun (a : α) => _inst_1 a) s)) (Finset.filter.{u1} β (Function.comp.{succ u1, succ u2, 1} β α Prop p (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (_x : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f))) (fun (a : β) => instDecidablePredCompProp.{succ u1, succ u2} β α p (FunLike.coe.{max (succ u2) (succ u1), succ u1, succ u2} (Equiv.{succ u1, succ u2} β α) β (fun (a : β) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : β) => α) a) (Equiv.instFunLikeEquiv.{succ u1, succ u2} β α) (Equiv.symm.{succ u2, succ u1} α β f)) (fun (a : α) => _inst_1 a) a) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β f) s))
 Case conversion may be inaccurate. Consider using '#align finset.map_filter Finset.map_filterₓ'. -/
 theorem map_filter {f : α ≃ β} {p : α → Prop} [DecidablePred p] :
     (s.filterₓ p).map f.toEmbedding = (s.map f.toEmbedding).filterₓ (p ∘ f.symm) := by
@@ -1313,7 +1313,7 @@ protected def finsetCongr (e : α ≃ β) : Finset α ≃ Finset β
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} (e : Equiv.{succ u1, succ u2} α β) (s : Finset.{u1} α), Eq.{succ u2} (Finset.{u2} β) (coeFn.{max 1 (max (succ u1) (succ u2)) (succ u2) (succ u1), max (succ u1) (succ u2)} (Equiv.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (fun (_x : Equiv.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) => (Finset.{u1} α) -> (Finset.{u2} β)) (Equiv.hasCoeToFun.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (Equiv.finsetCongr.{u1, u2} α β e) s) (Finset.map.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β e) s)
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} (e : Equiv.{succ u2, succ u1} α β) (s : Finset.{u2} α), Eq.{succ u1} ((fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : Finset.{u2} α) => Finset.{u1} β) s) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Equiv.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Finset.{u2} α) (fun (_x : Finset.{u2} α) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : Finset.{u2} α) => Finset.{u1} β) _x) (Equiv.instFunLikeEquiv.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Equiv.finsetCongr.{u2, u1} α β e) s) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β e) s)
+  forall {α : Type.{u2}} {β : Type.{u1}} (e : Equiv.{succ u2, succ u1} α β) (s : Finset.{u2} α), Eq.{succ u1} ((fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : Finset.{u2} α) => Finset.{u1} β) s) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Equiv.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Finset.{u2} α) (fun (_x : Finset.{u2} α) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.812 : Finset.{u2} α) => Finset.{u1} β) _x) (Equiv.instFunLikeEquiv.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Equiv.finsetCongr.{u2, u1} α β e) s) (Finset.map.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β e) s)
 Case conversion may be inaccurate. Consider using '#align equiv.finset_congr_apply Equiv.finsetCongr_applyₓ'. -/
 @[simp]
 theorem finsetCongr_apply (e : α ≃ β) (s : Finset α) : e.finsetCongr s = s.map e.toEmbedding :=
@@ -1358,7 +1358,7 @@ theorem finsetCongr_trans (e : α ≃ β) (e' : β ≃ γ) :
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} (e : Equiv.{succ u1, succ u2} α β), Eq.{max 1 (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (Equiv.toEmbedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β) (Equiv.finsetCongr.{u1, u2} α β e)) (RelEmbedding.toEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.mapEmbedding.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β e)))
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} (e : Equiv.{succ u2, succ u1} α β), Eq.{max (succ u2) (succ u1)} (Function.Embedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Equiv.toEmbedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β) (Equiv.finsetCongr.{u2, u1} α β e)) (RelEmbedding.toEmbedding.{u2, u1} (Finset.{u2} α) (Finset.{u1} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u2} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u2} α) => LE.le.{u2} (Finset.{u2} α) (Preorder.toLE.{u2} (Finset.{u2} α) (PartialOrder.toPreorder.{u2} (Finset.{u2} α) (Finset.partialOrder.{u2} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u1} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u1} β) => LE.le.{u1} (Finset.{u1} β) (Preorder.toLE.{u1} (Finset.{u1} β) (PartialOrder.toPreorder.{u1} (Finset.{u1} β) (Finset.partialOrder.{u1} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697) (Finset.mapEmbedding.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β e)))
+  forall {α : Type.{u2}} {β : Type.{u1}} (e : Equiv.{succ u2, succ u1} α β), Eq.{max (succ u2) (succ u1)} (Function.Embedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Equiv.toEmbedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β) (Equiv.finsetCongr.{u2, u1} α β e)) (RelEmbedding.toEmbedding.{u2, u1} (Finset.{u2} α) (Finset.{u1} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u2} α) (x._@.Mathlib.Order.Hom.Basic._hyg.684 : Finset.{u2} α) => LE.le.{u2} (Finset.{u2} α) (Preorder.toLE.{u2} (Finset.{u2} α) (PartialOrder.toPreorder.{u2} (Finset.{u2} α) (Finset.partialOrder.{u2} α))) x._@.Mathlib.Order.Hom.Basic._hyg.682 x._@.Mathlib.Order.Hom.Basic._hyg.684) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u1} β) (x._@.Mathlib.Order.Hom.Basic._hyg.699 : Finset.{u1} β) => LE.le.{u1} (Finset.{u1} β) (Preorder.toLE.{u1} (Finset.{u1} β) (PartialOrder.toPreorder.{u1} (Finset.{u1} β) (Finset.partialOrder.{u1} β))) x._@.Mathlib.Order.Hom.Basic._hyg.697 x._@.Mathlib.Order.Hom.Basic._hyg.699) (Finset.mapEmbedding.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β e)))
 Case conversion may be inaccurate. Consider using '#align equiv.finset_congr_to_embedding Equiv.finsetCongr_toEmbeddingₓ'. -/
 theorem finsetCongr_toEmbedding (e : α ≃ β) :
     e.finsetCongr.toEmbedding = (Finset.mapEmbedding e.toEmbedding).toEmbedding :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/95a87616d63b3cb49d3fe678d416fbe9c4217bf4

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/c89fe2d59ae06402c3f55f978016d1ada444f57e

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/f8c79b0a623404854a2902b836eac32156fd7712

@@ -491,9 +491,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) => Eq.ndrec.{0, succ u2} β xb (fun (xa : β) => (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8

@@ -263,13 +263,17 @@ theorem map_subset_map {s₁ s₂ : Finset α} : s₁.map f ⊆ s₂.map f ↔ s
     simp [subset_def, map_subset_map h]⟩
 #align finset.map_subset_map Finset.map_subset_map
 
-#print Finset.mapEmbedding /-
+/- warning: finset.map_embedding -> Finset.mapEmbedding is a dubious translation:
+lean 3 declaration is
+  forall {α : Type.{u1}} {β : Type.{u2}}, (Function.Embedding.{succ u1, succ u2} α β) -> (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))
+but is expected to have type
+  forall {α : Type.{u1}} {β : Type.{u2}}, (Function.Embedding.{succ u1, succ u2} α β) -> (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))
+Case conversion may be inaccurate. Consider using '#align finset.map_embedding Finset.mapEmbeddingₓ'. -/
 /-- Associate to an embedding `f` from `α` to `β` the order embedding that maps a finset to its
 image under `f`. -/
 def mapEmbedding (f : α ↪ β) : Finset α ↪o Finset β :=
   OrderEmbedding.ofMapLEIff (map f) fun _ _ => map_subset_map
 #align finset.map_embedding Finset.mapEmbedding
--/
 
 /- warning: finset.map_inj -> Finset.map_inj is a dubious translation:
 lean 3 declaration is
@@ -294,7 +298,7 @@ theorem map_injective (f : α ↪ β) : Injective (map f) :=
 
 /- warning: finset.map_embedding_apply -> Finset.mapEmbedding_apply is a dubious translation:
 lean 3 declaration is
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+  forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} (Finset.{u2} β) (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (fun (_x : RelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) => (Finset.{u1} α) -> (Finset.{u2} β)) (RelEmbedding.hasCoeToFun.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align finset.map_embedding_apply Finset.mapEmbedding_applyₓ'. -/
@@ -1352,7 +1356,7 @@ theorem finsetCongr_trans (e : α ≃ β) (e' : β ≃ γ) :
 
 /- warning: equiv.finset_congr_to_embedding -> Equiv.finsetCongr_toEmbedding is a dubious translation:
 lean 3 declaration is
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+  forall {α : Type.{u1}} {β : Type.{u2}} (e : Equiv.{succ u1, succ u2} α β), Eq.{max 1 (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (Equiv.toEmbedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β) (Equiv.finsetCongr.{u1, u2} α β e)) (RelEmbedding.toEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toHasLe.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toHasLe.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.mapEmbedding.{u1, u2} α β (Equiv.toEmbedding.{succ u1, succ u2} α β e)))
 but is expected to have type
   forall {α : Type.{u2}} {β : Type.{u1}} (e : Equiv.{succ u2, succ u1} α β), Eq.{max (succ u2) (succ u1)} (Function.Embedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β)) (Equiv.toEmbedding.{succ u2, succ u1} (Finset.{u2} α) (Finset.{u1} β) (Equiv.finsetCongr.{u2, u1} α β e)) (RelEmbedding.toEmbedding.{u2, u1} (Finset.{u2} α) (Finset.{u1} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u2} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u2} α) => LE.le.{u2} (Finset.{u2} α) (Preorder.toLE.{u2} (Finset.{u2} α) (PartialOrder.toPreorder.{u2} (Finset.{u2} α) (Finset.partialOrder.{u2} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u1} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u1} β) => LE.le.{u1} (Finset.{u1} β) (Preorder.toLE.{u1} (Finset.{u1} β) (PartialOrder.toPreorder.{u1} (Finset.{u1} β) (Finset.partialOrder.{u1} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697) (Finset.mapEmbedding.{u2, u1} α β (Equiv.toEmbedding.{succ u2, succ u1} α β e)))
 Case conversion may be inaccurate. Consider using '#align equiv.finset_congr_to_embedding Equiv.finsetCongr_toEmbeddingₓ'. -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8

@@ -487,9 +487,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/7ad820c4997738e2f542f8a20f32911f52020e26

@@ -487,9 +487,9 @@ theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h
 
 /- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) => Eq.ndrec.{0, succ u2} β xb (fun (xa : β) => (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) -> False) (fun (hfa : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t a)) (hxa : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
 theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/e3fb84046afd187b710170887195d50bada934ee

@@ -472,26 +472,26 @@ theorem disjoint_range_addRightEmbedding (a b : ℕ) :
   simpa [← ha] using hk.1
 #align finset.disjoint_range_add_right_embedding Finset.disjoint_range_addRightEmbedding
 
-/- warning: finset.map_disj_Union -> Finset.map_disjUnionᵢ is a dubious translation:
+/- warning: finset.map_disj_Union -> Finset.map_disjiUnion is a dubious translation:
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} {γ : Type.{u3}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α} {t : β -> (Finset.{u3} γ)} {h : Set.PairwiseDisjoint.{u3, u2} (Finset.{u3} γ) β (Finset.partialOrder.{u3} γ) (Finset.orderBot.{u3} γ) ((fun (a : Type.{u2}) (b : Type.{u2}) [self : HasLiftT.{succ u2, succ u2} a b] => self.0) (Finset.{u2} β) (Set.{u2} β) (HasLiftT.mk.{succ u2, succ u2} (Finset.{u2} β) (Set.{u2} β) (CoeTCₓ.coe.{succ u2, succ u2} (Finset.{u2} β) (Set.{u2} β) (Finset.Set.hasCoeT.{u2} β))) (Finset.map.{u1, u2} α β f s)) t}, Eq.{succ u3} (Finset.{u3} γ) (Finset.disjUnionₓ.{u2, u3} β γ (Finset.map.{u1, u2} α β f s) t h) (Finset.disjUnionₓ.{u1, u3} α γ s (fun (a : α) => t (coeFn.{max 1 (succ u1) (succ u2), max (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} α β) (fun (_x : Function.Embedding.{succ u1, succ u2} α β) => α -> β) (Function.Embedding.hasCoeToFun.{succ u1, succ u2} α β) f a)) (fun (a : α) (ha : Membership.Mem.{u1, u1} α (Set.{u1} α) (Set.hasMem.{u1} α) a ((fun (a : Type.{u1}) (b : Type.{u1}) [self : HasLiftT.{succ u1, succ u1} a b] => self.0) (Finset.{u1} α) (Set.{u1} α) (HasLiftT.mk.{succ u1, succ u1} (Finset.{u1} α) (Set.{u1} α) (CoeTCₓ.coe.{succ u1, succ u1} (Finset.{u1} α) (Set.{u1} α) (Finset.Set.hasCoeT.{u1} α))) s)) (b : α) (hb : Membership.Mem.{u1, u1} α (Set.{u1} α) (Set.hasMem.{u1} α) b ((fun (a : Type.{u1}) (b : Type.{u1}) [self : HasLiftT.{succ u1, succ u1} a b] => self.0) (Finset.{u1} α) (Set.{u1} α) (HasLiftT.mk.{succ u1, succ u1} (Finset.{u1} α) (Set.{u1} α) (CoeTCₓ.coe.{succ u1, succ u1} (Finset.{u1} α) (Set.{u1} α) (Finset.Set.hasCoeT.{u1} α))) s)) (hab : Ne.{succ u1} α a b) => h (coeFn.{max 1 (succ u1) (succ u2), max (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} α β) (fun (_x : Function.Embedding.{succ u1, succ u2} α β) => α -> β) (Function.Embedding.hasCoeToFun.{succ u1, succ u2} α β) f a) (Finset.mem_map_of_mem.{u1, u2} α β f a s ha) (coeFn.{max 1 (succ u1) (succ u2), max (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} α β) (fun (_x : Function.Embedding.{succ u1, succ u2} α β) => α -> β) (Function.Embedding.hasCoeToFun.{succ u1, succ u2} α β) f b) (Finset.mem_map_of_mem.{u1, u2} α β f b s hb) (Function.Injective.ne.{succ u1, succ u2} α β (coeFn.{max 1 (succ u1) (succ u2), max (succ u1) (succ u2)} (Function.Embedding.{succ u1, succ u2} α β) (fun (_x : Function.Embedding.{succ u1, succ u2} α β) => α -> β) (Function.Embedding.hasCoeToFun.{succ u1, succ u2} α β) f) (Function.Embedding.injective.{succ u1, succ u2} α β f) a b hab)))
 but is expected to have type
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-Case conversion may be inaccurate. Consider using '#align finset.map_disj_Union Finset.map_disjUnionᵢₓ'. -/
-theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h} :
+  forall {α : Type.{u3}} {β : Type.{u2}} {γ : Type.{u1}} {f : Function.Embedding.{succ u3, succ u2} α β} {s : Finset.{u3} α} {t : β -> (Finset.{u1} γ)} {h : Set.PairwiseDisjoint.{u1, u2} (Finset.{u1} γ) β (Finset.partialOrder.{u1} γ) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u1} γ) (Finset.toSet.{u2} β (Finset.map.{u3, u2} α β f s)) t}, Eq.{succ u1} (Finset.{u1} γ) (Finset.disjiUnion.{u2, u1} β γ (Finset.map.{u3, u2} α β f s) t h) (Finset.disjiUnion.{u3, u1} α γ s (fun (a : α) => t (FunLike.coe.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u3, succ u2} α β)) f a)) (fun (a : α) (ha : Membership.mem.{u3, u3} α (Set.{u3} α) (Set.instMembershipSet.{u3} α) a (Finset.toSet.{u3} α s)) (b : α) (hb : Membership.mem.{u3, u3} α (Set.{u3} α) (Set.instMembershipSet.{u3} α) b (Finset.toSet.{u3} α s)) (hab : Ne.{succ u3} α a b) => h (FunLike.coe.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u3, succ u2} α β)) f a) (Finset.mem_map_of_mem.{u2, u3} α β f a s ha) (FunLike.coe.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u3) (succ u2), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u3, succ u2} α β)) f b) (Finset.mem_map_of_mem.{u2, u3} α β f b s hb) (Function.Injective.ne.{succ u2, succ u3} α β (FunLike.coe.{max (succ u2) (succ u3), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u3), succ u3, succ u2} (Function.Embedding.{succ u3, succ u2} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u3, succ u2} α β)) f) (Function.Embedding.injective.{succ u2, succ u3} α β f) a b hab)))
+Case conversion may be inaccurate. Consider using '#align finset.map_disj_Union Finset.map_disjiUnionₓ'. -/
+theorem map_disjiUnion {f : α ↪ β} {s : Finset α} {t : β → Finset γ} {h} :
     (s.map f).disjUnionₓ t h =
       s.disjUnionₓ (fun a => t (f a)) fun a ha b hb hab =>
         h (mem_map_of_mem _ ha) (mem_map_of_mem _ hb) (f.Injective.Ne hab) :=
   eq_of_veq <| Multiset.bind_map _ _ _
-#align finset.map_disj_Union Finset.map_disjUnionᵢ
+#align finset.map_disj_Union Finset.map_disjiUnion
 
-/- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
+/- warning: finset.disj_Union_map -> Finset.disjiUnion_map is a dubious translation:
 lean 3 declaration is
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succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
-Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
-theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
+  forall {α : Type.{u3}} {β : Type.{u2}} {γ : Type.{u1}} {s : Finset.{u3} α} {t : α -> (Finset.{u2} β)} {f : Function.Embedding.{succ u2, succ u1} β γ} {h : Set.PairwiseDisjoint.{u2, u3} (Finset.{u2} β) α (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (Finset.toSet.{u3} α s) t}, Eq.{succ u1} (Finset.{u1} γ) (Finset.map.{u2, u1} β γ f (Finset.disjiUnion.{u3, u2} α β s t h)) (Finset.disjiUnion.{u3, u1} α γ s (fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) (fun (a : α) (ha : Membership.mem.{u3, u3} α (Set.{u3} α) (Set.instMembershipSet.{u3} α) a (Finset.toSet.{u3} α s)) (b : α) (hb : Membership.mem.{u3, u3} α (Set.{u3} α) (Set.instMembershipSet.{u3} α) b (Finset.toSet.{u3} α s)) (hab : Ne.{succ u3} α a b) => Iff.mpr (Disjoint.{u1} (Finset.{u1} γ) (Finset.partialOrder.{u1} γ) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u1} γ) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (forall {{a_1 : γ}}, (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) a_1 ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Not (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) a_1 ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)))) (Finset.disjoint_left.{u1} γ ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (fun (x : γ) (hxa : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) x ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) x ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) => Exists.casesOn.{succ u2} β (fun (a_1 : β) => And (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a_1) (FunLike.coe.{max (succ u2) (succ 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(Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) x (Finset.map.{u2, u1} β γ f (t a))) (Exists.{succ u2} β (fun (a_1 : β) => And (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a_1) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f a_1) x))) (Finset.mem_map.{u2, u1} β γ f (t a) x) hxa) (fun (xa : β) (h_1 : And (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xa) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ 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(x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xa) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) x)) => False) h_1 (fun (hfa : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) (h_1_h : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xa) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) x) => Eq.ndrec.{0, succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xa) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) (fun (x : γ) => (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) x ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) x ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> False) (fun (hxa : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) => Exists.casesOn.{succ u2} β (fun (a : β) => And (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a (t b)) (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f a) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) (fun (_fresh.632.129848 : Exists.{succ u2} β (fun (a : β) => And (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a (t b)) (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f a) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)))) => False) (Iff.mp (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β 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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) => Eq.ndrec.{0, succ u2} β xb (fun (xa : β) => (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xa (t a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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+Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjiUnion_mapₓ'. -/
+theorem disjiUnion_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =
       s.disjUnionₓ (fun a => (t a).map f) fun a ha b hb hab =>
         disjoint_left.mpr fun x hxa hxb =>
@@ -501,7 +501,7 @@ theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ}
           obtain rfl := f.injective hfab
           exact disjoint_left.mp (h ha hb hab) hfa hfb :=
   eq_of_veq <| Multiset.map_bind _ _ _
-#align finset.disj_Union_map Finset.disjUnionᵢ_map
+#align finset.disj_Union_map Finset.disjiUnion_map
 
 end Map
 
@@ -1078,45 +1078,45 @@ theorem map_erase [DecidableEq α] (f : α ↪ β) (s : Finset α) (a : α) :
   exact s.image_erase f.2 a
 #align finset.map_erase Finset.map_erase
 
-/- warning: finset.image_bUnion -> Finset.image_bunionᵢ is a dubious translation:
+/- warning: finset.image_bUnion -> Finset.image_biUnion is a dubious translation:
 lean 3 declaration is
-  forall {α : Type.{u1}} {β : Type.{u2}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u3} γ] {f : α -> β} {s : Finset.{u1} α} {t : β -> (Finset.{u3} γ)}, Eq.{succ u3} (Finset.{u3} γ) (Finset.bunionᵢ.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) (Finset.image.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) f s) t) (Finset.bunionᵢ.{u1, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => t (f a)))
+  forall {α : Type.{u1}} {β : Type.{u2}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u3} γ] {f : α -> β} {s : Finset.{u1} α} {t : β -> (Finset.{u3} γ)}, Eq.{succ u3} (Finset.{u3} γ) (Finset.biUnion.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) (Finset.image.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) f s) t) (Finset.biUnion.{u1, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => t (f a)))
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u3} γ] {f : α -> β} {s : Finset.{u2} α} {t : β -> (Finset.{u3} γ)}, Eq.{succ u3} (Finset.{u3} γ) (Finset.bunionᵢ.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) f s) t) (Finset.bunionᵢ.{u2, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => t (f a)))
-Case conversion may be inaccurate. Consider using '#align finset.image_bUnion Finset.image_bunionᵢₓ'. -/
-theorem image_bunionᵢ [DecidableEq γ] {f : α → β} {s : Finset α} {t : β → Finset γ} :
-    (s.image f).bunionᵢ t = s.bunionᵢ fun a => t (f a) :=
+  forall {α : Type.{u2}} {β : Type.{u1}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u3} γ] {f : α -> β} {s : Finset.{u2} α} {t : β -> (Finset.{u3} γ)}, Eq.{succ u3} (Finset.{u3} γ) (Finset.biUnion.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) (Finset.image.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) f s) t) (Finset.biUnion.{u2, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => t (f a)))
+Case conversion may be inaccurate. Consider using '#align finset.image_bUnion Finset.image_biUnionₓ'. -/
+theorem image_biUnion [DecidableEq γ] {f : α → β} {s : Finset α} {t : β → Finset γ} :
+    (s.image f).biUnion t = s.biUnion fun a => t (f a) :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [image_insert, bUnion_insert, ih]
-#align finset.image_bUnion Finset.image_bunionᵢ
+#align finset.image_bUnion Finset.image_biUnion
 
-/- warning: finset.bUnion_image -> Finset.bunionᵢ_image is a dubious translation:
+/- warning: finset.bUnion_image -> Finset.biUnion_image is a dubious translation:
 lean 3 declaration is
-  forall {α : Type.{u1}} {β : Type.{u2}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u3} γ] {s : Finset.{u1} α} {t : α -> (Finset.{u2} β)} {f : β -> γ}, Eq.{succ u3} (Finset.{u3} γ) (Finset.image.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (Finset.bunionᵢ.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) s t)) (Finset.bunionᵢ.{u1, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => Finset.image.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (t a)))
+  forall {α : Type.{u1}} {β : Type.{u2}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u3} γ] {s : Finset.{u1} α} {t : α -> (Finset.{u2} β)} {f : β -> γ}, Eq.{succ u3} (Finset.{u3} γ) (Finset.image.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (Finset.biUnion.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) s t)) (Finset.biUnion.{u1, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => Finset.image.{u2, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (t a)))
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u3} γ] {s : Finset.{u2} α} {t : α -> (Finset.{u1} β)} {f : β -> γ}, Eq.{succ u3} (Finset.{u3} γ) (Finset.image.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (Finset.bunionᵢ.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) s t)) (Finset.bunionᵢ.{u2, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => Finset.image.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (t a)))
-Case conversion may be inaccurate. Consider using '#align finset.bUnion_image Finset.bunionᵢ_imageₓ'. -/
-theorem bunionᵢ_image [DecidableEq γ] {s : Finset α} {t : α → Finset β} {f : β → γ} :
-    (s.bunionᵢ t).image f = s.bunionᵢ fun a => (t a).image f :=
+  forall {α : Type.{u2}} {β : Type.{u1}} {γ : Type.{u3}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u3} γ] {s : Finset.{u2} α} {t : α -> (Finset.{u1} β)} {f : β -> γ}, Eq.{succ u3} (Finset.{u3} γ) (Finset.image.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (Finset.biUnion.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) s t)) (Finset.biUnion.{u2, u3} α γ (fun (a : γ) (b : γ) => _inst_2 a b) s (fun (a : α) => Finset.image.{u1, u3} β γ (fun (a : γ) (b : γ) => _inst_2 a b) f (t a)))
+Case conversion may be inaccurate. Consider using '#align finset.bUnion_image Finset.biUnion_imageₓ'. -/
+theorem biUnion_image [DecidableEq γ] {s : Finset α} {t : α → Finset β} {f : β → γ} :
+    (s.biUnion t).image f = s.biUnion fun a => (t a).image f :=
   haveI := Classical.decEq α
   Finset.induction_on s rfl fun a s has ih => by simp only [bUnion_insert, image_union, ih]
-#align finset.bUnion_image Finset.bunionᵢ_image
+#align finset.bUnion_image Finset.biUnion_image
 
-/- warning: finset.image_bUnion_filter_eq -> Finset.image_bunionᵢ_filter_eq is a dubious translation:
+/- warning: finset.image_bUnion_filter_eq -> Finset.image_biUnion_filter_eq is a dubious translation:
 lean 3 declaration is
-  forall {α : Type.{u1}} {β : Type.{u2}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u1} α] (s : Finset.{u2} β) (g : β -> α), Eq.{succ u2} (Finset.{u2} β) (Finset.bunionᵢ.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) (Finset.image.{u2, u1} β α (fun (a : α) (b : α) => _inst_2 a b) g s) (fun (a : α) => Finset.filter.{u2} β (fun (c : β) => Eq.{succ u1} α (g c) a) (fun (a_1 : β) => _inst_2 (g a_1) a) s)) s
+  forall {α : Type.{u1}} {β : Type.{u2}} [_inst_1 : DecidableEq.{succ u2} β] [_inst_2 : DecidableEq.{succ u1} α] (s : Finset.{u2} β) (g : β -> α), Eq.{succ u2} (Finset.{u2} β) (Finset.biUnion.{u1, u2} α β (fun (a : β) (b : β) => _inst_1 a b) (Finset.image.{u2, u1} β α (fun (a : α) (b : α) => _inst_2 a b) g s) (fun (a : α) => Finset.filter.{u2} β (fun (c : β) => Eq.{succ u1} α (g c) a) (fun (a_1 : β) => _inst_2 (g a_1) a) s)) s
 but is expected to have type
-  forall {α : Type.{u2}} {β : Type.{u1}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u2} α] (s : Finset.{u1} β) (g : β -> α), Eq.{succ u1} (Finset.{u1} β) (Finset.bunionᵢ.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) (Finset.image.{u1, u2} β α (fun (a : α) (b : α) => _inst_2 a b) g s) (fun (a : α) => Finset.filter.{u1} β (fun (c : β) => Eq.{succ u2} α (g c) a) (fun (a_1 : β) => _inst_2 (g a_1) a) s)) s
-Case conversion may be inaccurate. Consider using '#align finset.image_bUnion_filter_eq Finset.image_bunionᵢ_filter_eqₓ'. -/
-theorem image_bunionᵢ_filter_eq [DecidableEq α] (s : Finset β) (g : β → α) :
-    ((s.image g).bunionᵢ fun a => s.filterₓ fun c => g c = a) = s :=
-  bunionᵢ_filter_eq_of_maps_to fun x => mem_image_of_mem g
-#align finset.image_bUnion_filter_eq Finset.image_bunionᵢ_filter_eq
+  forall {α : Type.{u2}} {β : Type.{u1}} [_inst_1 : DecidableEq.{succ u1} β] [_inst_2 : DecidableEq.{succ u2} α] (s : Finset.{u1} β) (g : β -> α), Eq.{succ u1} (Finset.{u1} β) (Finset.biUnion.{u2, u1} α β (fun (a : β) (b : β) => _inst_1 a b) (Finset.image.{u1, u2} β α (fun (a : α) (b : α) => _inst_2 a b) g s) (fun (a : α) => Finset.filter.{u1} β (fun (c : β) => Eq.{succ u2} α (g c) a) (fun (a_1 : β) => _inst_2 (g a_1) a) s)) s
+Case conversion may be inaccurate. Consider using '#align finset.image_bUnion_filter_eq Finset.image_biUnion_filter_eqₓ'. -/
+theorem image_biUnion_filter_eq [DecidableEq α] (s : Finset β) (g : β → α) :
+    ((s.image g).biUnion fun a => s.filterₓ fun c => g c = a) = s :=
+  biUnion_filter_eq_of_maps_to fun x => mem_image_of_mem g
+#align finset.image_bUnion_filter_eq Finset.image_biUnion_filter_eq
 
-#print Finset.bunionᵢ_singleton /-
-theorem bunionᵢ_singleton {f : α → β} : (s.bunionᵢ fun a => {f a}) = s.image f :=
+#print Finset.biUnion_singleton /-
+theorem biUnion_singleton {f : α → β} : (s.biUnion fun a => {f a}) = s.image f :=
   ext fun x => by simp only [mem_bUnion, mem_image, mem_singleton, eq_comm]
-#align finset.bUnion_singleton Finset.bunionᵢ_singleton
+#align finset.bUnion_singleton Finset.biUnion_singleton
 -/
 
 end Image

mathlib commit https://github.com/leanprover-community/mathlib/commit/e3fb84046afd187b710170887195d50bada934ee

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/403190b5419b3f03f1a2893ad9352ca7f7d8bff6

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/2f8347015b12b0864dfaf366ec4909eb70c78740

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/28b2a92f2996d28e580450863c130955de0ed398

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/2f8347015b12b0864dfaf366ec4909eb70c78740

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/28b2a92f2996d28e580450863c130955de0ed398

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/cc5dd6244981976cc9da7afc4eee5682b037a013

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/d4437c68c8d350fc9d4e95e1e174409db35e30d7

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/08e1d8d4d989df3a6df86f385e9053ec8a372cc1

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/4c8f86bdbe06f92960d0eb314da8ca64a9d33bca

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/3905fa80e62c0898131285baab35559fbc4e5cda

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/738054fa93d43512da144ec45ce799d18fd44248

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/92c69b77c5a7dc0f7eeddb552508633305157caa

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/36b8aa61ea7c05727161f96a0532897bd72aedab

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/39478763114722f0ec7613cb2f3f7701f9b86c8d

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/8b8ba04e2f326f3f7cf24ad129beda58531ada61

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/86d04064ca33ee3d3405fbfc497d494fd2dd4796

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/a4f99eae998680d3a2c240da4a2b16354c85ee49

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/fa78268d4d77cb2b2fbc89f0527e2e7807763780

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/9b2b58d6b14b895b2f375108e765cb47de71aebd

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/d2d964c64f8ddcccd6704a731c41f95d13e72f5c

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/2651125b48fc5c170ab1111afd0817c903b1fc6c

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/09079525fd01b3dda35e96adaa08d2f943e1648c

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/7e281deff072232a3c5b3e90034bd65dde396312

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/52932b3a083d4142e78a15dc928084a22fea9ba0

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/246f6f7989ff86bd07e1b014846f11304f33cf9e

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/730c6d4cab72b9d84fcfb9e95e8796e9cd8f40ba

@@ -296,7 +296,7 @@ theorem map_injective (f : α ↪ β) : Injective (map f) :=
 lean 3 declaration is
   forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} (Finset.{u2} β) (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (fun (_x : RelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) => (Finset.{u1} α) -> (Finset.{u2} β)) (RelEmbedding.hasCoeToFun.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α)))) (LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
 but is expected to have type
-  forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : Finset.{u1} α) => Finset.{u2} β) s) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (Function.Embedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (Finset.{u1} α) (fun (_x : Finset.{u1} α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : Finset.{u1} α) => Finset.{u2} β) _x) (EmbeddingLike.toFunLike.{max (succ u1) (succ u2), succ u1, succ u2} (Function.Embedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β)) (Finset.{u1} α) (Finset.{u2} β) (Function.instEmbeddingLikeEmbedding.{succ u1, succ u2} (Finset.{u1} α) (Finset.{u2} β))) (RelEmbedding.toEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697) (Finset.mapEmbedding.{u1, u2} α β f)) s) (Finset.map.{u1, u2} α β f s)
+  forall {α : Type.{u1}} {β : Type.{u2}} {f : Function.Embedding.{succ u1, succ u2} α β} {s : Finset.{u1} α}, Eq.{succ u2} ((fun (x._@.Mathlib.Order.RelIso.Basic._hyg.867 : Finset.{u1} α) => Finset.{u2} β) s) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (fun (_x : Finset.{u1} α) => (fun (x._@.Mathlib.Order.RelIso.Basic._hyg.867 : Finset.{u1} α) => Finset.{u2} β) _x) (RelHomClass.toFunLike.{max u1 u2, u1, u2} (OrderEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β)))) (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697) (RelEmbedding.instRelHomClassRelEmbedding.{u1, u2} (Finset.{u1} α) (Finset.{u2} β) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.680 : Finset.{u1} α) (x._@.Mathlib.Order.Hom.Basic._hyg.682 : Finset.{u1} α) => LE.le.{u1} (Finset.{u1} α) (Preorder.toLE.{u1} (Finset.{u1} α) (PartialOrder.toPreorder.{u1} (Finset.{u1} α) (Finset.partialOrder.{u1} α))) x._@.Mathlib.Order.Hom.Basic._hyg.680 x._@.Mathlib.Order.Hom.Basic._hyg.682) (fun (x._@.Mathlib.Order.Hom.Basic._hyg.695 : Finset.{u2} β) (x._@.Mathlib.Order.Hom.Basic._hyg.697 : Finset.{u2} β) => LE.le.{u2} (Finset.{u2} β) (Preorder.toLE.{u2} (Finset.{u2} β) (PartialOrder.toPreorder.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β))) x._@.Mathlib.Order.Hom.Basic._hyg.695 x._@.Mathlib.Order.Hom.Basic._hyg.697))) (Finset.mapEmbedding.{u1, u2} α β f) s) (Finset.map.{u1, u2} α β f s)
 Case conversion may be inaccurate. Consider using '#align finset.map_embedding_apply Finset.mapEmbedding_applyₓ'. -/
 @[simp]
 theorem mapEmbedding_apply : mapEmbedding f s = map f s :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/730c6d4cab72b9d84fcfb9e95e8796e9cd8f40ba

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/cd8fafa2fac98e1a67097e8a91ad9901cfde48af

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/49b7f94aab3a3bdca1f9f34c5d818afb253b3993

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/17ad94b4953419f3e3ce3e77da3239c62d1d09f0

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/4f4a1c875d0baa92ab5d92f3fb1bb258ad9f3e5b

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/0e2aab2b0d521f060f62a14d2cf2e2c54e8491d6

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/7ebf83ed9c262adbf983ef64d5e8c2ae94b625f4

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/347636a7a80595d55bedf6e6fbd996a3c39da69a

@@ -408,7 +408,7 @@ theorem map_insert [DecidableEq α] [DecidableEq β] (f : α ↪ β) (a : α) (s
 lean 3 declaration is
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 but is expected to have type
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β) f a_1 a))))) (Std.Logic._auxLemma.39.{succ u2} α (fun (a : α) => Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s) a)))) ha))
+  forall {α : Type.{u2}} {β : Type.{u1}} (f : Function.Embedding.{succ u2, succ u1} α β) (a : α) (s : Finset.{u2} α) (ha : Not (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s)), Eq.{succ u1} (Finset.{u1} β) (Finset.map.{u2, u1} α β f (Finset.cons.{u2} α a s ha)) (Finset.cons.{u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a) (Finset.map.{u2, u1} α ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) f s) (Eq.mpr.{0} (Not (Membership.mem.{u1, u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) (Finset.{u1} ((fun 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=> β) a)) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (_x : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a) (Finset.map.{u2, u1} α ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) f s))) (Not (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s))) (congrArg.{1, 1} Prop Prop (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (a : α) => β) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a) (Finset.map.{u2, u1} α β f s)) (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s) Not (Eq.trans.{1} Prop (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (_x : α) => β) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a) (Finset.map.{u2, u1} α β f s)) (Exists.{succ u2} α (fun (a_1 : α) => And (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a_1 s) (Eq.{succ u2} α a_1 a))) (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s) (Eq.trans.{1} Prop (Membership.mem.{u1, u1} β (Finset.{u1} β) (Finset.instMembershipFinset.{u1} β) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (_x : α) => β) 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(FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (a : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a_1) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α (fun (a : α) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : α) => β) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β)) f a)) (Eq.{succ u2} α a_1 a) (And (Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a_1 s)) (Mathlib.Data.FunLike.Embedding._auxLemma.1.{succ u2, max (succ u2) (succ u1), succ u1} (Function.Embedding.{succ u2, succ u1} α β) α β (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} α β) f a_1 a))))) (Std.Logic._auxLemma.38.{succ u2} α (fun (a : α) => Membership.mem.{u2, u2} α (Finset.{u2} α) (Finset.instMembershipFinset.{u2} α) a s) a)))) ha))
 Case conversion may be inaccurate. Consider using '#align finset.map_cons Finset.map_consₓ'. -/
 @[simp]
 theorem map_cons (f : α ↪ β) (a : α) (s : Finset α) (ha : a ∉ s) :
@@ -509,7 +509,7 @@ end Map
 lean 3 declaration is
   forall (n : Nat), Eq.{1} (Finset.{0} Nat) (Finset.range (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat Nat.hasAdd) n (OfNat.ofNat.{0} Nat 1 (OfNat.mk.{0} Nat 1 (One.one.{0} Nat Nat.hasOne))))) (Insert.insert.{0, 0} Nat (Finset.{0} Nat) (Finset.hasInsert.{0} Nat (fun (a : Nat) (b : Nat) => Nat.decidableEq a b)) (OfNat.ofNat.{0} Nat 0 (OfNat.mk.{0} Nat 0 (Zero.zero.{0} Nat Nat.hasZero))) (Finset.map.{0, 0} Nat Nat (Function.Embedding.mk.{1, 1} Nat Nat (fun (i : Nat) => HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat Nat.hasAdd) i (OfNat.ofNat.{0} Nat 1 (OfNat.mk.{0} Nat 1 (One.one.{0} Nat Nat.hasOne)))) (fun (i : Nat) (j : Nat) => Nat.succ.inj i j)) (Finset.range n)))
 but is expected to have type
-  forall (n : Nat), Eq.{1} (Finset.{0} Nat) (Finset.range (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) n (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) (Insert.insert.{0, 0} Nat (Finset.{0} Nat) (Finset.instInsertFinset.{0} Nat (fun (a : Nat) (b : Nat) => instDecidableEqNat a b)) (OfNat.ofNat.{0} Nat 0 (instOfNatNat 0)) (Finset.map.{0, 0} Nat Nat (Function.Embedding.mk.{1, 1} Nat Nat (fun (i : Nat) => HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (fun (i : Nat) (j : Nat) => of_eq_true ((Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) -> (Eq.{1} Nat i j)) (Eq.trans.{1} Prop ((Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) -> (Eq.{1} Nat i j)) ((Eq.{1} Nat i j) -> (Eq.{1} Nat i j)) True (implies_congr.{0, 0} (Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) (Eq.{1} Nat i j) (Eq.{1} Nat i j) (Eq.{1} Nat i j) (Mathlib.Algebra.Group.Defs._auxLemma.4.{0} Nat instAddNat (IsCancelAdd.toIsRightCancelAdd.{0} Nat instAddNat (AddCancelMonoid.toIsCancelAdd.{0} Nat (AddCancelCommMonoid.toAddCancelMonoid.{0} Nat (OrderedCancelAddCommMonoid.toCancelAddCommMonoid.{0} Nat (StrictOrderedSemiring.toOrderedCancelAddCommMonoid.{0} Nat Nat.strictOrderedSemiring))))) (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)) i j) (Eq.refl.{1} Prop (Eq.{1} Nat i j))) (Std.Logic._auxLemma.6 (Eq.{1} Nat i j))))) (Finset.range n)))
+  forall (n : Nat), Eq.{1} (Finset.{0} Nat) (Finset.range (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) n (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) (Insert.insert.{0, 0} Nat (Finset.{0} Nat) (Finset.instInsertFinset.{0} Nat (fun (a : Nat) (b : Nat) => instDecidableEqNat a b)) (OfNat.ofNat.{0} Nat 0 (instOfNatNat 0)) (Finset.map.{0, 0} Nat Nat (Function.Embedding.mk.{1, 1} Nat Nat (fun (i : Nat) => HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (fun (i : Nat) (j : Nat) => of_eq_true ((Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) -> (Eq.{1} Nat i j)) (Eq.trans.{1} Prop ((Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) -> (Eq.{1} Nat i j)) ((Eq.{1} Nat i j) -> (Eq.{1} Nat i j)) True (implies_congr.{0, 0} (Eq.{1} Nat (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) i (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1))) (HAdd.hAdd.{0, 0, 0} Nat Nat Nat (instHAdd.{0} Nat instAddNat) j (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)))) (Eq.{1} Nat i j) (Eq.{1} Nat i j) (Eq.{1} Nat i j) (Mathlib.Algebra.Group.Defs._auxLemma.4.{0} Nat instAddNat (IsCancelAdd.toIsRightCancelAdd.{0} Nat instAddNat (AddCancelMonoid.toIsCancelAdd.{0} Nat (AddCancelCommMonoid.toAddCancelMonoid.{0} Nat (OrderedCancelAddCommMonoid.toCancelAddCommMonoid.{0} Nat (StrictOrderedSemiring.toOrderedCancelAddCommMonoid.{0} Nat Nat.strictOrderedSemiring))))) (OfNat.ofNat.{0} Nat 1 (instOfNatNat 1)) i j) (Eq.refl.{1} Prop (Eq.{1} Nat i j))) (Std.Logic._auxLemma.5 (Eq.{1} Nat i j))))) (Finset.range n)))
 Case conversion may be inaccurate. Consider using '#align finset.range_add_one' Finset.range_add_one'ₓ'. -/
 theorem range_add_one' (n : ℕ) :
     range (n + 1) = insert 0 ((range n).map ⟨fun i => i + 1, fun i j => Nat.succ.inj⟩) := by

mathlib commit https://github.com/leanprover-community/mathlib/commit/347636a7a80595d55bedf6e6fbd996a3c39da69a

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/039ef89bef6e58b32b62898dd48e9d1a4312bb65

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/c9236f47f5b9df573443aa499c0d3968769628b7

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/e05ead7993520a432bec94ac504842d90707ad63

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/284fdd2962e67d2932fa3a79ce19fcf92d38e228

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/dc65937e7a0fff4677f0f5a7086f42da70a69575

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/5ec62c8106221a3f9160e4e4fcc3eed79fe213e9

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/06a655b5fcfbda03502f9158bbf6c0f1400886f9

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) -> (Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) -> (Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/1a4df69ca1a9a0e5e26bfe12e2b92814216016d0

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/3cacc945118c8c637d89950af01da78307f59325

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 but is expected to have type
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/d95bef0d215ea58c0fd7bbc4b151bf3fe952c095

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/88fcb83fe7996142dfcfe7368d31304a9adc874a

@@ -487,9 +487,9 @@ theorem map_disjUnionᵢ {f : α ↪ β} {s : Finset α} {t : β → Finset γ}
 
 /- warning: finset.disj_Union_map -> Finset.disjUnionᵢ_map is a dubious translation:
 lean 3 declaration is
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(Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (a : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) a) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa))) => False) h_1 (fun (hfb : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ 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u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xa)) -> False) (fun (hfa : Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) xb (t a)) (hxa : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) a)) (hxb : Membership.mem.{u1, u1} γ (Finset.{u1} γ) (Finset.instMembershipFinset.{u1} γ) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) ((fun (a : α) => Finset.map.{u2, u1} β γ f (t a)) b)) (hfab : Eq.{succ u1} ((fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb) (FunLike.coe.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β (fun (_x : β) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : β) => γ) _x) (EmbeddingLike.toFunLike.{max (succ u2) (succ u1), succ u2, succ u1} (Function.Embedding.{succ u2, succ u1} β γ) β γ (Function.instEmbeddingLikeEmbedding.{succ u2, succ u1} β γ)) f xb)) => Iff.mp (Disjoint.{u2} (Finset.{u2} β) (Finset.partialOrder.{u2} β) (Finset.instOrderBotFinsetToLEToPreorderPartialOrder.{u2} β) (t a) (t b)) (forall {{a_1 : β}}, (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t a)) -> (Not (Membership.mem.{u2, u2} β (Finset.{u2} β) (Finset.instMembershipFinset.{u2} β) a_1 (t b)))) (Finset.disjoint_left.{u2} β (t a) (t b)) (h a ha b hb hab) xb hfa hfb) xa (Function.Embedding.injective.{succ u1, succ u2} β γ f xb xa hfab) hfa hxa hxb hfab))) x h_1_h hxa hxb)))))
 Case conversion may be inaccurate. Consider using '#align finset.disj_Union_map Finset.disjUnionᵢ_mapₓ'. -/
 theorem disjUnionᵢ_map {s : Finset α} {t : α → Finset β} {f : β ↪ γ} {h} :
     (s.disjUnionₓ t h).map f =

mathlib commit https://github.com/leanprover-community/mathlib/commit/172bf2812857f5e56938cc148b7a539f52f84ca9