data.set.opposite | Mathlib porting status

Changes since the initial port

The following section lists changes to this file in mathlib3 and mathlib4 that occured after the initial port. Most recent changes are shown first. Hovering over a commit will show all commits associated with the same mathlib3 commit.

Changes in mathlib3

fc2ed6f8

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

448144f7

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,8 +3,8 @@ Copyright (c) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
-import Mathbin.Data.Opposite
-import Mathbin.Data.Set.Image
+import Data.Opposite
+import Data.Set.Image
 
 #align_import data.set.opposite from "leanprover-community/mathlib"@"448144f7ae193a8990cb7473c9e9a01990f64ac7"

448144f7

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-
-! This file was ported from Lean 3 source module data.set.opposite
-! leanprover-community/mathlib commit 448144f7ae193a8990cb7473c9e9a01990f64ac7
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Data.Opposite
 import Mathbin.Data.Set.Image
 
+#align_import data.set.opposite from "leanprover-community/mathlib"@"448144f7ae193a8990cb7473c9e9a01990f64ac7"
+
 /-!
 # The opposite of a set

448144f7

bump to nightly-2023-02-21-16

mathlib commit https://github.com/leanprover-community/mathlib/commit/bd9851ca476957ea4549eb19b40e7b5ade9428cc

1107b979

Changes in mathlib4

mathlib3

mathlib4

fc2ed6f8

chore(*): shake imports (#10199)

Remove Data.Set.Basic from scripts/noshake.json.
Remove an exception that was used by examples only, move these examples to a new test file.
Drop an exception for Order.Filter.Basic dependency on Control.Traversable.Instances, as the relevant parts were moved to Order.Filter.ListTraverse.
Run lake exe shake --fix.

c167d468

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
 import Mathlib.Data.Opposite
-import Mathlib.Data.Set.Basic
+import Mathlib.Data.Set.Defs
 
 #align_import data.set.opposite from "leanprover-community/mathlib"@"fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e"

fc2ed6f8

chore: reduce imports (#9830)

This uses the improved shake script from #9772 to reduce imports across mathlib. The corresponding noshake.json file has been added to #9772.

Co-authored-by: Mario Carneiro <di.gama@gmail.com>

f4c4ca61

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
 import Mathlib.Data.Opposite
-import Mathlib.Data.Set.Image
+import Mathlib.Data.Set.Basic
 
 #align_import data.set.opposite from "leanprover-community/mathlib"@"fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e"

fc2ed6f8

chore: banish Type _ and Sort _ (#6499)

We remove all possible occurences of Type _ and Sort _ in favor of Type* and Sort*.

This has nice performance benefits.

32de3f67

Diff

@@ -14,7 +14,7 @@ import Mathlib.Data.Set.Image
 The opposite of a set `s` is simply the set obtained by taking the opposite of each member of `s`.
 -/
 
-variable {α : Type _}
+variable {α : Type*}
 
 open Opposite

fc2ed6f8

chore: remove 'Ported by' headers (#6018)

Briefly during the port we were adding "Ported by" headers, but only ~60 / 3000 files ended up with such a header.

I propose deleting them.

We could consider adding these uniformly via a script, as part of the great history rewrite...?

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

e8318a88

Diff

@@ -2,7 +2,6 @@
 Copyright (c) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-Ported by: Joël Riou
 -/
 import Mathlib.Data.Opposite
 import Mathlib.Data.Set.Image

fc2ed6f8

chore: script to replace headers with #align_import statements (#5979)

depends on: #5966

Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

89aa3a3b

Diff

@@ -3,15 +3,12 @@ Copyright (c) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 Ported by: Joël Riou
-
-! This file was ported from Lean 3 source module data.set.opposite
-! leanprover-community/mathlib commit fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Data.Opposite
 import Mathlib.Data.Set.Image
 
+#align_import data.set.opposite from "leanprover-community/mathlib"@"fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e"
+
 /-!
 # The opposite of a set

fc2ed6f8

chore: fix focusing dots (#5708)

This PR is the result of running

find . -type f -name "*.lean" -exec sed -i -E 's/^( +)\. /\1· /' {} \;
find . -type f -name "*.lean" -exec sed -i -E 'N;s/^( +·)\n +(.*)$/\1 \2/;P;D' {} \;

which firstly replaces . focusing dots with · and secondly removes isolated instances of such dots, unifying them with the following line. A new rule is placed in the style linter to verify this.

cb02d09e

Diff

@@ -80,32 +80,32 @@ def opEquiv : Set α ≃ Set αᵒᵖ :=
 theorem singleton_op (x : α) : ({x} : Set α).op = {op x} := by
   ext
   constructor
-  . apply unop_injective
-  . apply op_injective
+  · apply unop_injective
+  · apply op_injective
 #align set.singleton_op Set.singleton_op
 
 @[simp]
 theorem singleton_unop (x : αᵒᵖ) : ({x} : Set αᵒᵖ).unop = {unop x} := by
   ext
   constructor
-  . apply op_injective
-  . apply unop_injective
+  · apply op_injective
+  · apply unop_injective
 #align set.singleton_unop Set.singleton_unop
 
 @[simp 1100]
 theorem singleton_op_unop (x : α) : ({op x} : Set αᵒᵖ).unop = {x} := by
   ext
   constructor
-  . apply op_injective
-  . apply unop_injective
+  · apply op_injective
+  · apply unop_injective
 #align set.singleton_op_unop Set.singleton_op_unop
 
 @[simp 1100]
 theorem singleton_unop_op (x : αᵒᵖ) : ({unop x} : Set α).op = {x} := by
   ext
   constructor
-  . apply unop_injective
-  . apply op_injective
+  · apply unop_injective
+  · apply op_injective
 #align set.singleton_unop_op Set.singleton_unop_op
 
 end Set

fc2ed6f8

chore: made Opposite a structure (#3193)

The opposite category is no longer a type synonym, but a structure.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com> Co-authored-by: Parcly Taxel <reddeloostw@gmail.com> Co-authored-by: Scott Morrison <scott@tqft.net>

d090d0a8

Diff

@@ -77,19 +77,35 @@ def opEquiv : Set α ≃ Set αᵒᵖ :=
 #align set.op_equiv_apply Set.opEquiv_apply
 
 @[simp]
-theorem singleton_op (x : α) : ({x} : Set α).op = {op x} := rfl
+theorem singleton_op (x : α) : ({x} : Set α).op = {op x} := by
+  ext
+  constructor
+  . apply unop_injective
+  . apply op_injective
 #align set.singleton_op Set.singleton_op
 
 @[simp]
-theorem singleton_unop (x : αᵒᵖ) : ({x} : Set αᵒᵖ).unop = {unop x} := rfl
+theorem singleton_unop (x : αᵒᵖ) : ({x} : Set αᵒᵖ).unop = {unop x} := by
+  ext
+  constructor
+  . apply op_injective
+  . apply unop_injective
 #align set.singleton_unop Set.singleton_unop
 
-@[simp]
-theorem singleton_op_unop (x : α) : ({op x} : Set αᵒᵖ).unop = {x} := rfl
+@[simp 1100]
+theorem singleton_op_unop (x : α) : ({op x} : Set αᵒᵖ).unop = {x} := by
+  ext
+  constructor
+  . apply op_injective
+  . apply unop_injective
 #align set.singleton_op_unop Set.singleton_op_unop
 
-@[simp]
-theorem singleton_unop_op (x : αᵒᵖ) : ({unop x} : Set α).op = {x} := rfl
+@[simp 1100]
+theorem singleton_unop_op (x : αᵒᵖ) : ({unop x} : Set α).op = {x} := by
+  ext
+  constructor
+  . apply unop_injective
+  . apply op_injective
 #align set.singleton_unop_op Set.singleton_unop_op
 
 end Set

fc2ed6f8

chore: add missing #align statements (#1902)

This PR is the result of a slight variant on the following "algorithm"

take all mathlib 3 names, remove _ and make all uppercase letters into lowercase
take all mathlib 4 names, remove _ and make all uppercase letters into lowercase
look for matches, and create pairs (original_lean3_name, OriginalLean4Name)
for pairs that do not have an align statement:
- use Lean 4 to lookup the file + position of the Lean 4 name
- add an #align statement just before the next empty line
manually fix some tiny mistakes (e.g., empty lines in proofs might cause the #align statement to have been inserted too early)

b72bb858

Diff

@@ -27,52 +27,69 @@ namespace Set
 /-- The opposite of a set `s` is the set obtained by taking the opposite of each member of `s`. -/
 protected def op (s : Set α) : Set αᵒᵖ :=
   unop ⁻¹' s
+#align set.op Set.op
 
 /-- The unop of a set `s` is the set obtained by taking the unop of each member of `s`. -/
 protected def unop (s : Set αᵒᵖ) : Set α :=
   op ⁻¹' s
+#align set.unop Set.unop
 
 @[simp]
 theorem mem_op {s : Set α} {a : αᵒᵖ} : a ∈ s.op ↔ unop a ∈ s :=
   Iff.rfl
+#align set.mem_op Set.mem_op
 
 @[simp 1100]
 theorem op_mem_op {s : Set α} {a : α} : op a ∈ s.op ↔ a ∈ s := by rfl
+#align set.op_mem_op Set.op_mem_op
 
 @[simp]
 theorem mem_unop {s : Set αᵒᵖ} {a : α} : a ∈ s.unop ↔ op a ∈ s :=
   Iff.rfl
+#align set.mem_unop Set.mem_unop
 
 @[simp 1100]
 theorem unop_mem_unop {s : Set αᵒᵖ} {a : αᵒᵖ} : unop a ∈ s.unop ↔ a ∈ s := by rfl
+#align set.unop_mem_unop Set.unop_mem_unop
 
 @[simp]
 theorem op_unop (s : Set α) : s.op.unop = s := rfl
+#align set.op_unop Set.op_unop
 
 @[simp]
 theorem unop_op (s : Set αᵒᵖ) : s.unop.op = s := rfl
+#align set.unop_op Set.unop_op
 
 /-- The members of the opposite of a set are in bijection with the members of the set itself. -/
 @[simps]
 def opEquiv_self (s : Set α) : s.op ≃ s :=
   ⟨fun x ↦ ⟨unop x, x.2⟩, fun x ↦ ⟨op x, x.2⟩, fun _ ↦ rfl, fun _ ↦ rfl⟩
 #align set.op_equiv_self Set.opEquiv_self
+#align set.op_equiv_self_apply_coe Set.opEquiv_self_apply_coe
+#align set.op_equiv_self_symm_apply_coe Set.opEquiv_self_symm_apply_coe
 
 /-- Taking opposites as an equivalence of powersets. -/
 @[simps]
 def opEquiv : Set α ≃ Set αᵒᵖ :=
   ⟨Set.op, Set.unop, op_unop, unop_op⟩
+#align set.op_equiv Set.opEquiv
+#align set.op_equiv_symm_apply Set.opEquiv_symm_apply
+#align set.op_equiv_apply Set.opEquiv_apply
 
 @[simp]
 theorem singleton_op (x : α) : ({x} : Set α).op = {op x} := rfl
+#align set.singleton_op Set.singleton_op
 
 @[simp]
 theorem singleton_unop (x : αᵒᵖ) : ({x} : Set αᵒᵖ).unop = {unop x} := rfl
+#align set.singleton_unop Set.singleton_unop
 
 @[simp]
 theorem singleton_op_unop (x : α) : ({op x} : Set αᵒᵖ).unop = {x} := rfl
+#align set.singleton_op_unop Set.singleton_op_unop
 
 @[simp]
 theorem singleton_unop_op (x : αᵒᵖ) : ({unop x} : Set α).op = {x} := rfl
+#align set.singleton_unop_op Set.singleton_unop_op
 
 end Set

fc2ed6f8

chore: add source headers to ported theory files (#1094)

The script used to do this is included. The yaml file was obtained from https://raw.githubusercontent.com/wiki/leanprover-community/mathlib/mathlib4-port-status.md

f168625e

Diff

@@ -3,6 +3,11 @@ Copyright (c) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 Ported by: Joël Riou
+
+! This file was ported from Lean 3 source module data.set.opposite
+! leanprover-community/mathlib commit fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e
+! Please do not edit these lines, except to modify the commit id
+! if you have ported upstream changes.
 -/
 import Mathlib.Data.Opposite
 import Mathlib.Data.Set.Image

`data.set.opposite` ⟷ `Mathlib.Data.Set.Opposite`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 38

data.set.opposite ⟷ Mathlib.Data.Set.Opposite

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 38

`data.set.opposite` ⟷ `Mathlib.Data.Set.Opposite`