measure_theory.group.add_circle | 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

f2ce6086

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

f2ad3645

bump to nightly-2024-04-06-08

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

e34029c9

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Oliver Nash
 -/
 import MeasureTheory.Integral.Periodic
-import Data.Zmod.Quotient
+import Data.ZMod.Quotient
 
 #align_import measure_theory.group.add_circle from "leanprover-community/mathlib"@"f2ad3645af9effcdb587637dc28a6074edc813f9"
 
@@ -83,8 +83,8 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
       rw [add_comm g x, ← singleton_add_ball _ x g, add_ball, thickening_singleton]
     rw [hBg]
     apply ball_disjoint_ball
-    rw [dist_eq_norm, add_sub_cancel, div_mul_eq_div_div, ← add_div, ← add_div, add_self_div_two,
-      div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
+    rw [dist_eq_norm, add_sub_cancel_right, div_mul_eq_div_div, ← add_div, ← add_div,
+      add_self_div_two, div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
     refine'
       (le_add_order_smul_norm_of_is_of_fin_add_order (hu.of_mem_zmultiples hg) hg').trans
         (nsmul_le_nsmul_left (norm_nonneg g) _)
@@ -100,7 +100,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closed_ball, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
       div_self (@two_ne_zero ℝ _ _ _ _), one_mul, min_eq_right (div_le_self hT.out.le hn), hG_card,
-      nsmul_eq_mul, mul_div_cancel' T (lt_of_lt_of_le zero_lt_one hn).Ne.symm]
+      nsmul_eq_mul, mul_div_cancel₀ T (lt_of_lt_of_le zero_lt_one hn).Ne.symm]
     exact le_refl _
 #align add_circle.is_add_fundamental_domain_of_ae_ball AddCircle.isAddFundamentalDomain_of_ae_ball
 -/

f2ad3645

bump to nightly-2024-03-01-08

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

f62598c4

Diff

@@ -74,7 +74,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     exact measurable_set_ball.null_measurable_set.congr hI.symm
   · -- `∀ (g : G), g ≠ 0 → ae_disjoint volume (g +ᵥ I) I`
     rintro ⟨g, hg⟩ hg'
-    replace hg' : g ≠ 0; · simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
+    replace hg' : g ≠ 0; · simpa only [Ne.def, AddSubgroup.mk_eq_zero] using hg'
     change ae_disjoint volume (g +ᵥ I) I
     refine'
       ae_disjoint.congr (Disjoint.aedisjoint _)

f2ad3645

bump to nightly-2023-12-20-06

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

058cd493

Diff

@@ -87,7 +87,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
       div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
     refine'
       (le_add_order_smul_norm_of_is_of_fin_add_order (hu.of_mem_zmultiples hg) hg').trans
-        (nsmul_le_nsmul (norm_nonneg g) _)
+        (nsmul_le_nsmul_left (norm_nonneg g) _)
     exact Nat.le_of_dvd (add_order_of_pos_iff.mpr hu) (addOrderOf_dvd_of_mem_zmultiples hg)
   ·-- `∀ (g : G), quasi_measure_preserving (has_vadd.vadd g) volume volume`
     exact fun g => quasi_measure_preserving_add_left volume g

f2ad3645

bump to nightly-2023-11-29-11

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

049e2cad

Diff

@@ -95,7 +95,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     replace hI : I =ᵐ[volume] closed_ball x (T / (2 * ↑n)) := hI.trans closed_ball_ae_eq_ball.symm
     haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples
     have hG_card : (Finset.univ : Finset G).card = n := by show _ = addOrderOf u;
-      rw [add_order_eq_card_zmultiples', Nat.card_eq_fintype_card]; rfl
+      rw [Nat.card_zmultiples, Nat.card_eq_fintype_card]; rfl
     simp_rw [measure_vadd]
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closed_ball, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
@@ -117,7 +117,7 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
     exact (vadd_ae_eq_self_of_mem_zmultiples hs hy : _)
   rw [(is_add_fundamental_domain_of_ae_ball I u x hu hI).measure_eq_card_smul_of_vadd_ae_eq_self s
       hsG,
-    add_order_eq_card_zmultiples' u, Nat.card_eq_fintype_card]
+    Nat.card_zmultiples u, Nat.card_eq_fintype_card]
 #align add_circle.volume_of_add_preimage_eq AddCircle.volume_of_add_preimage_eq
 -/

f2ad3645

bump to nightly-2023-11-15-06

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

38c8ceef

Diff

@@ -68,7 +68,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
   set G := AddSubgroup.zmultiples u
   set n := addOrderOf u
   set B := ball x (T / (2 * n))
-  have hn : 1 ≤ (n : ℝ) := by norm_cast; linarith [addOrderOf_pos' hu]
+  have hn : 1 ≤ (n : ℝ) := by norm_cast; linarith [IsOfFinAddOrder.addOrderOf_pos hu]
   refine' is_add_fundamental_domain.mk_of_measure_univ_le _ _ _ _
   ·-- `null_measurable_set I volume`
     exact measurable_set_ball.null_measurable_set.congr hI.symm

f2ad3645

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 Oliver Nash. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Oliver Nash
 -/
-import Mathbin.MeasureTheory.Integral.Periodic
-import Mathbin.Data.Zmod.Quotient
+import MeasureTheory.Integral.Periodic
+import Data.Zmod.Quotient
 
 #align_import measure_theory.group.add_circle from "leanprover-community/mathlib"@"f2ad3645af9effcdb587637dc28a6074edc813f9"

f2ad3645

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 Oliver Nash. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Oliver Nash
-
-! This file was ported from Lean 3 source module measure_theory.group.add_circle
-! leanprover-community/mathlib commit f2ad3645af9effcdb587637dc28a6074edc813f9
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.MeasureTheory.Integral.Periodic
 import Mathbin.Data.Zmod.Quotient
 
+#align_import measure_theory.group.add_circle from "leanprover-community/mathlib"@"f2ad3645af9effcdb587637dc28a6074edc813f9"
+
 /-!
 # Measure-theoretic results about the additive circle

f2ad3645

bump to nightly-2023-06-21-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/f2ad3645af9effcdb587637dc28a6074edc813f9

78c41114

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Oliver Nash
 
 ! This file was ported from Lean 3 source module measure_theory.group.add_circle
-! leanprover-community/mathlib commit f2ce6086713c78a7f880485f7917ea547a215982
+! leanprover-community/mathlib commit f2ad3645af9effcdb587637dc28a6074edc813f9
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -14,6 +14,9 @@ import Mathbin.Data.Zmod.Quotient
 /-!
 # Measure-theoretic results about the additive circle
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 The file is a place to collect measure-theoretic results about the additive circle.
 
 ## Main definitions:

f2ce6086

bump to nightly-2023-06-19-09

mathlib commit https://github.com/leanprover-community/mathlib/commit/2a0ce625dbb0ffbc7d1316597de0b25c1ec75303

bbb90f4e

Diff

@@ -34,6 +34,7 @@ namespace AddCircle
 
 variable {T : ℝ} [hT : Fact (0 < T)]
 
+#print AddCircle.closedBall_ae_eq_ball /-
 theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =ᵐ[volume] ball x ε :=
   by
   cases' le_or_lt ε 0 with hε hε
@@ -54,7 +55,9 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
       le_of_tendsto this (mem_nhds_within_Iio_iff_exists_Ioo_subset.mpr ⟨0, hε, fun r hr => _⟩)
     exact measure_mono (closed_ball_subset_ball hr.2)
 #align add_circle.closed_ball_ae_eq_ball AddCircle.closedBall_ae_eq_ball
+-/
 
+#print AddCircle.isAddFundamentalDomain_of_ae_ball /-
 /-- Let `G` be the subgroup of `add_circle T` generated by a point `u` of finite order `n : ℕ`. Then
 any set `I` that is almost equal to a ball of radius `T / 2n` is a fundamental domain for the action
 of `G` on `add_circle T` by left addition. -/
@@ -100,7 +103,9 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
       nsmul_eq_mul, mul_div_cancel' T (lt_of_lt_of_le zero_lt_one hn).Ne.symm]
     exact le_refl _
 #align add_circle.is_add_fundamental_domain_of_ae_ball AddCircle.isAddFundamentalDomain_of_ae_ball
+-/
 
+#print AddCircle.volume_of_add_preimage_eq /-
 theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
     (hu : IsOfFinAddOrder u) (hs : (u +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s)
     (hI : I =ᵐ[volume] ball x (T / (2 * addOrderOf u))) :
@@ -114,6 +119,7 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
       hsG,
     add_order_eq_card_zmultiples' u, Nat.card_eq_fintype_card]
 #align add_circle.volume_of_add_preimage_eq AddCircle.volume_of_add_preimage_eq
+-/
 
 end AddCircle

f2ce6086

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -34,8 +34,6 @@ namespace AddCircle
 
 variable {T : ℝ} [hT : Fact (0 < T)]
 
-include hT
-
 theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =ᵐ[volume] ball x ε :=
   by
   cases' le_or_lt ε 0 with hε hε

f2ce6086

bump to nightly-2023-06-04-18

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

3fb4268b

Diff

@@ -50,7 +50,7 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
       by
       simp_rw [volume_closed_ball]
       refine' ENNReal.tendsto_ofReal (tendsto.min tendsto_const_nhds <| tendsto.const_mul _ _)
-      convert(@monotone_id ℝ _).tendsto_nhdsWithin_Iio ε
+      convert (@monotone_id ℝ _).tendsto_nhdsWithin_Iio ε
       simp
     refine'
       le_of_tendsto this (mem_nhds_within_Iio_iff_exists_Ioo_subset.mpr ⟨0, hε, fun r hr => _⟩)

f2ce6086

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -28,7 +28,7 @@ The file is a place to collect measure-theoretic results about the additive circ
 
 open Set Function Filter MeasureTheory MeasureTheory.Measure Metric
 
-open MeasureTheory Pointwise BigOperators Topology ENNReal
+open scoped MeasureTheory Pointwise BigOperators Topology ENNReal
 
 namespace AddCircle

f2ce6086

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -67,16 +67,13 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
   set G := AddSubgroup.zmultiples u
   set n := addOrderOf u
   set B := ball x (T / (2 * n))
-  have hn : 1 ≤ (n : ℝ) := by
-    norm_cast
-    linarith [addOrderOf_pos' hu]
+  have hn : 1 ≤ (n : ℝ) := by norm_cast; linarith [addOrderOf_pos' hu]
   refine' is_add_fundamental_domain.mk_of_measure_univ_le _ _ _ _
   ·-- `null_measurable_set I volume`
     exact measurable_set_ball.null_measurable_set.congr hI.symm
   · -- `∀ (g : G), g ≠ 0 → ae_disjoint volume (g +ᵥ I) I`
     rintro ⟨g, hg⟩ hg'
-    replace hg' : g ≠ 0
-    · simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
+    replace hg' : g ≠ 0; · simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
     change ae_disjoint volume (g +ᵥ I) I
     refine'
       ae_disjoint.congr (Disjoint.aedisjoint _)
@@ -96,11 +93,8 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
   · -- `volume univ ≤ ∑' (g : G), volume (g +ᵥ I)`
     replace hI : I =ᵐ[volume] closed_ball x (T / (2 * ↑n)) := hI.trans closed_ball_ae_eq_ball.symm
     haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples
-    have hG_card : (Finset.univ : Finset G).card = n :=
-      by
-      show _ = addOrderOf u
-      rw [add_order_eq_card_zmultiples', Nat.card_eq_fintype_card]
-      rfl
+    have hG_card : (Finset.univ : Finset G).card = n := by show _ = addOrderOf u;
+      rw [add_order_eq_card_zmultiples', Nat.card_eq_fintype_card]; rfl
     simp_rw [measure_vadd]
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closed_ball, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
@@ -116,9 +110,7 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
   by
   let G := AddSubgroup.zmultiples u
   haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples
-  have hsG : ∀ g : G, (g +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s :=
-    by
-    rintro ⟨y, hy⟩
+  have hsG : ∀ g : G, (g +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s := by rintro ⟨y, hy⟩;
     exact (vadd_ae_eq_self_of_mem_zmultiples hs hy : _)
   rw [(is_add_fundamental_domain_of_ae_ball I u x hu hI).measure_eq_card_smul_of_vadd_ae_eq_self s
       hsG,

f2ce6086

bump to nightly-2023-05-06-08

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

e8904d96

Diff

@@ -79,7 +79,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     · simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
     change ae_disjoint volume (g +ᵥ I) I
     refine'
-      ae_disjoint.congr (Disjoint.aeDisjoint _)
+      ae_disjoint.congr (Disjoint.aedisjoint _)
         ((quasi_measure_preserving_add_left volume (-g)).vadd_ae_eq_of_ae_eq g hI) hI
     have hBg : g +ᵥ B = ball (g + x) (T / (2 * n)) := by
       rw [add_comm g x, ← singleton_add_ball _ x g, add_ball, thickening_singleton]

f2ce6086

bump to nightly-2023-05-04-10

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

3d8894bd

Diff

@@ -60,7 +60,7 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
 /-- Let `G` be the subgroup of `add_circle T` generated by a point `u` of finite order `n : ℕ`. Then
 any set `I` that is almost equal to a ball of radius `T / 2n` is a fundamental domain for the action
 of `G` on `add_circle T` by left addition. -/
-theorem isAddFundamentalDomainOfAeBall (I : Set <| AddCircle T) (u x : AddCircle T)
+theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCircle T)
     (hu : IsOfFinAddOrder u) (hI : I =ᵐ[volume] ball x (T / (2 * addOrderOf u))) :
     IsAddFundamentalDomain (AddSubgroup.zmultiples u) I :=
   by
@@ -107,7 +107,7 @@ theorem isAddFundamentalDomainOfAeBall (I : Set <| AddCircle T) (u x : AddCircle
       div_self (@two_ne_zero ℝ _ _ _ _), one_mul, min_eq_right (div_le_self hT.out.le hn), hG_card,
       nsmul_eq_mul, mul_div_cancel' T (lt_of_lt_of_le zero_lt_one hn).Ne.symm]
     exact le_refl _
-#align add_circle.is_add_fundamental_domain_of_ae_ball AddCircle.isAddFundamentalDomainOfAeBall
+#align add_circle.is_add_fundamental_domain_of_ae_ball AddCircle.isAddFundamentalDomain_of_ae_ball
 
 theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
     (hu : IsOfFinAddOrder u) (hs : (u +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s)

f2ce6086

bump to nightly-2023-03-17-00

mathlib commit https://github.com/leanprover-community/mathlib/commit/ce7e9d53d4bbc38065db3b595cd5bd73c323bc1d

c85864d4

Diff

@@ -50,7 +50,7 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
       by
       simp_rw [volume_closed_ball]
       refine' ENNReal.tendsto_ofReal (tendsto.min tendsto_const_nhds <| tendsto.const_mul _ _)
-      convert (@monotone_id ℝ _).tendsto_nhdsWithin_Iio ε
+      convert(@monotone_id ℝ _).tendsto_nhdsWithin_Iio ε
       simp
     refine'
       le_of_tendsto this (mem_nhds_within_Iio_iff_exists_Ioo_subset.mpr ⟨0, hε, fun r hr => _⟩)

f2ce6086

bump to nightly-2023-02-27-10

mathlib commit https://github.com/leanprover-community/mathlib/commit/eb0cb4511aaef0da2462207b67358a0e1fe1e2ee

49ff026a

Diff

@@ -28,7 +28,7 @@ The file is a place to collect measure-theoretic results about the additive circ
 
 open Set Function Filter MeasureTheory MeasureTheory.Measure Metric
 
-open MeasureTheory Pointwise BigOperators Topology Ennreal
+open MeasureTheory Pointwise BigOperators Topology ENNReal
 
 namespace AddCircle
 
@@ -40,7 +40,7 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
   by
   cases' le_or_lt ε 0 with hε hε
   · rw [ball_eq_empty.mpr hε, ae_eq_empty, volume_closed_ball,
-      min_eq_right (by linarith [hT.out] : 2 * ε ≤ T), Ennreal.ofReal_eq_zero]
+      min_eq_right (by linarith [hT.out] : 2 * ε ≤ T), ENNReal.ofReal_eq_zero]
     exact mul_nonpos_of_nonneg_of_nonpos zero_le_two hε
   · suffices volume (closed_ball x ε) ≤ volume (ball x ε) by
       exact
@@ -49,7 +49,7 @@ theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =
     have : tendsto (fun δ => volume (closed_ball x δ)) (𝓝[<] ε) (𝓝 <| volume (closed_ball x ε)) :=
       by
       simp_rw [volume_closed_ball]
-      refine' Ennreal.tendsto_ofReal (tendsto.min tendsto_const_nhds <| tendsto.const_mul _ _)
+      refine' ENNReal.tendsto_ofReal (tendsto.min tendsto_const_nhds <| tendsto.const_mul _ _)
       convert (@monotone_id ℝ _).tendsto_nhdsWithin_Iio ε
       simp
     refine'
@@ -103,7 +103,7 @@ theorem isAddFundamentalDomainOfAeBall (I : Set <| AddCircle T) (u x : AddCircle
       rfl
     simp_rw [measure_vadd]
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
-      volume_closed_ball, ← Ennreal.ofReal_nsmul, mul_div, mul_div_mul_comm,
+      volume_closed_ball, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
       div_self (@two_ne_zero ℝ _ _ _ _), one_mul, min_eq_right (div_le_self hT.out.le hn), hG_card,
       nsmul_eq_mul, mul_div_cancel' T (lt_of_lt_of_le zero_lt_one hn).Ne.symm]
     exact le_refl _

f2ce6086

bump to nightly-2023-02-22-21

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

0652cf4a

Diff

@@ -69,7 +69,7 @@ theorem isAddFundamentalDomainOfAeBall (I : Set <| AddCircle T) (u x : AddCircle
   set B := ball x (T / (2 * n))
   have hn : 1 ≤ (n : ℝ) := by
     norm_cast
-    linarith [add_orderOf_pos' hu]
+    linarith [addOrderOf_pos' hu]
   refine' is_add_fundamental_domain.mk_of_measure_univ_le _ _ _ _
   ·-- `null_measurable_set I volume`
     exact measurable_set_ball.null_measurable_set.congr hI.symm
@@ -90,7 +90,7 @@ theorem isAddFundamentalDomainOfAeBall (I : Set <| AddCircle T) (u x : AddCircle
     refine'
       (le_add_order_smul_norm_of_is_of_fin_add_order (hu.of_mem_zmultiples hg) hg').trans
         (nsmul_le_nsmul (norm_nonneg g) _)
-    exact Nat.le_of_dvd (add_order_of_pos_iff.mpr hu) (add_orderOf_dvd_of_mem_zmultiples hg)
+    exact Nat.le_of_dvd (add_order_of_pos_iff.mpr hu) (addOrderOf_dvd_of_mem_zmultiples hg)
   ·-- `∀ (g : G), quasi_measure_preserving (has_vadd.vadd g) volume volume`
     exact fun g => quasi_measure_preserving_add_left volume g
   · -- `volume univ ≤ ∑' (g : G), volume (g +ᵥ I)`

f2ce6086

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

f2ce6086

chore: avoid Ne.def (adaptation for nightly-2024-03-27) (#11813)

08686b25

Diff

@@ -63,7 +63,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     exact measurableSet_ball.nullMeasurableSet.congr hI.symm
   · -- `∀ (g : G), g ≠ 0 → AEDisjoint volume (g +ᵥ I) I`
     rintro ⟨g, hg⟩ hg'
-    replace hg' : g ≠ 0 := by simpa only [Ne.def, AddSubgroup.mk_eq_zero] using hg'
+    replace hg' : g ≠ 0 := by simpa only [Ne, AddSubgroup.mk_eq_zero] using hg'
     change AEDisjoint volume (g +ᵥ I) I
     refine' AEDisjoint.congr (Disjoint.aedisjoint _)
       ((quasiMeasurePreserving_add_left volume (-g)).vadd_ae_eq_of_ae_eq g hI) hI

f2ce6086

chore: Rename mul-div cancellation lemmas (#11530)

Lemma names around cancellation of multiplication and division are a mess.

This PR renames a handful of them according to the following table (each big row contains the multiplicative statement, then the three rows contain the GroupWithZero lemma name, the Group lemma, the AddGroup lemma name).

4ea4a86a

Diff

@@ -71,8 +71,8 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
       rw [add_comm g x, ← singleton_add_ball _ x g, add_ball, thickening_singleton]
     rw [hBg]
     apply ball_disjoint_ball
-    rw [dist_eq_norm, add_sub_cancel, div_mul_eq_div_div, ← add_div, ← add_div, add_self_div_two,
-      div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
+    rw [dist_eq_norm, add_sub_cancel_right, div_mul_eq_div_div, ← add_div, ← add_div,
+      add_self_div_two, div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
     refine' (le_add_order_smul_norm_of_isOfFinAddOrder (hu.of_mem_zmultiples hg) hg').trans
       (nsmul_le_nsmul_left (norm_nonneg g) _)
     exact Nat.le_of_dvd (addOrderOf_pos_iff.mpr hu) (addOrderOf_dvd_of_mem_zmultiples hg)
@@ -88,7 +88,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closedBall, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
       div_self, one_mul, min_eq_right (div_le_self hT.out.le hn), hG_card,
-      nsmul_eq_mul, mul_div_cancel' T (lt_of_lt_of_le zero_lt_one hn).ne.symm]
+      nsmul_eq_mul, mul_div_cancel₀ T (lt_of_lt_of_le zero_lt_one hn).ne.symm]
     exact two_ne_zero
 #align add_circle.is_add_fundamental_domain_of_ae_ball AddCircle.isAddFundamentalDomain_of_ae_ball

f2ce6086

feat: ℕ, ℤ and ℚ≥0 are star-ordered rings (#10633)

Also golf the existing instance for ℚ and rename Rat.num_nonneg_iff_zero_le to Rat.num_nonneg, Rat.num_pos_iff_pos to Rat.num_pos.

From LeanAPAP

449a4a9b

Diff

@@ -63,7 +63,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     exact measurableSet_ball.nullMeasurableSet.congr hI.symm
   · -- `∀ (g : G), g ≠ 0 → AEDisjoint volume (g +ᵥ I) I`
     rintro ⟨g, hg⟩ hg'
-    replace hg' : g ≠ 0 := by simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
+    replace hg' : g ≠ 0 := by simpa only [Ne.def, AddSubgroup.mk_eq_zero] using hg'
     change AEDisjoint volume (g +ᵥ I) I
     refine' AEDisjoint.congr (Disjoint.aedisjoint _)
       ((quasiMeasurePreserving_add_left volume (-g)).vadd_ae_eq_of_ae_eq g hI) hI

f2ce6086

chore: Remove unnecessary "rw"s (#10704)

Remove unnecessary "rw"s.

db5a9376

Diff

@@ -101,7 +101,7 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
   have hsG : ∀ g : G, (g +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s := by
     rintro ⟨y, hy⟩; exact (vadd_ae_eq_self_of_mem_zmultiples hs hy : _)
   rw [(isAddFundamentalDomain_of_ae_ball I u x hu hI).measure_eq_card_smul_of_vadd_ae_eq_self s hsG,
-    ← Nat.card_zmultiples u, Nat.card_eq_fintype_card]
+    ← Nat.card_zmultiples u]
 #align add_circle.volume_of_add_preimage_eq AddCircle.volume_of_add_preimage_eq
 
 end AddCircle

f2ce6086

chore: remove stream-of-consciousness uses of have, replace and suffices (#10640)

No changes to tactic file, it's just boring fixes throughout the library.

This follows on from #6964.

Co-authored-by: sgouezel <sebastien.gouezel@univ-rennes1.fr> Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

a13e8040

Diff

@@ -63,7 +63,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     exact measurableSet_ball.nullMeasurableSet.congr hI.symm
   · -- `∀ (g : G), g ≠ 0 → AEDisjoint volume (g +ᵥ I) I`
     rintro ⟨g, hg⟩ hg'
-    replace hg' : g ≠ 0; · simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
+    replace hg' : g ≠ 0 := by simpa only [Ne.def, AddSubgroup.mk_eq_zero_iff] using hg'
     change AEDisjoint volume (g +ᵥ I) I
     refine' AEDisjoint.congr (Disjoint.aedisjoint _)
       ((quasiMeasurePreserving_add_left volume (-g)).vadd_ae_eq_of_ae_eq g hI) hI

f2ce6086

chore: remove uses of cases' (#9171)

I literally went through and regex'd some uses of cases', replacing them with rcases; this is meant to be a low effort PR as I hope that tools can do this in the future.

rcases is an easier replacement than cases, though with better tools we could in future do a second pass converting simple rcases added here (and existing ones) to cases.

3fca282c

Diff

@@ -32,7 +32,7 @@ namespace AddCircle
 variable {T : ℝ} [hT : Fact (0 < T)]
 
 theorem closedBall_ae_eq_ball {x : AddCircle T} {ε : ℝ} : closedBall x ε =ᵐ[volume] ball x ε := by
-  cases' le_or_lt ε 0 with hε hε
+  rcases le_or_lt ε 0 with hε | hε
   · rw [ball_eq_empty.mpr hε, ae_eq_empty, volume_closedBall,
       min_eq_right (by linarith [hT.out] : 2 * ε ≤ T), ENNReal.ofReal_eq_zero]
     exact mul_nonpos_of_nonneg_of_nonpos zero_le_two hε

f2ce6086

chore: Rename pow monotonicity lemmas (#9095)

The names for lemmas about monotonicity of (a ^ ·) and (· ^ n) were a mess. This PR tidies up everything related by following the naming convention for (a * ·) and (· * b). Namely, (a ^ ·) is pow_right and (· ^ n) is pow_left in lemma names. All lemma renames follow the corresponding multiplication lemma names closely.

Renames

`Algebra.GroupPower.Order`

pow_mono → pow_right_mono
pow_le_pow → pow_le_pow_right
pow_le_pow_of_le_left → pow_le_pow_left
pow_lt_pow_of_lt_left → pow_lt_pow_left
strictMonoOn_pow → pow_left_strictMonoOn
pow_strictMono_right → pow_right_strictMono
pow_lt_pow → pow_lt_pow_right
pow_lt_pow_iff → pow_lt_pow_iff_right
pow_le_pow_iff → pow_le_pow_iff_right
self_lt_pow → lt_self_pow
strictAnti_pow → pow_right_strictAnti
pow_lt_pow_iff_of_lt_one → pow_lt_pow_iff_right_of_lt_one
pow_lt_pow_of_lt_one → pow_lt_pow_right_of_lt_one
lt_of_pow_lt_pow → lt_of_pow_lt_pow_left
le_of_pow_le_pow → le_of_pow_le_pow_left
pow_lt_pow₀ → pow_lt_pow_right₀

`Algebra.GroupPower.CovariantClass`

pow_le_pow_of_le_left' → pow_le_pow_left'
nsmul_le_nsmul_of_le_right → nsmul_le_nsmul_right
pow_lt_pow' → pow_lt_pow_right'
nsmul_lt_nsmul → nsmul_lt_nsmul_left
pow_strictMono_left → pow_right_strictMono'
nsmul_strictMono_right → nsmul_left_strictMono
StrictMono.pow_right' → StrictMono.pow_const
StrictMono.nsmul_left → StrictMono.const_nsmul
pow_strictMono_right' → pow_left_strictMono
nsmul_strictMono_left → nsmul_right_strictMono
Monotone.pow_right → Monotone.pow_const
Monotone.nsmul_left → Monotone.const_nsmul
lt_of_pow_lt_pow' → lt_of_pow_lt_pow_left'
lt_of_nsmul_lt_nsmul → lt_of_nsmul_lt_nsmul_right
pow_le_pow' → pow_le_pow_right'
nsmul_le_nsmul → nsmul_le_nsmul_left
pow_le_pow_of_le_one' → pow_le_pow_right_of_le_one'
nsmul_le_nsmul_of_nonpos → nsmul_le_nsmul_left_of_nonpos
le_of_pow_le_pow' → le_of_pow_le_pow_left'
le_of_nsmul_le_nsmul' → le_of_nsmul_le_nsmul_right'
pow_le_pow_iff' → pow_le_pow_iff_right'
nsmul_le_nsmul_iff → nsmul_le_nsmul_iff_left
pow_lt_pow_iff' → pow_lt_pow_iff_right'
nsmul_lt_nsmul_iff → nsmul_lt_nsmul_iff_left

`Data.Nat.Pow`

Nat.pow_lt_pow_of_lt_left → Nat.pow_lt_pow_left
Nat.pow_le_iff_le_left → Nat.pow_le_pow_iff_left
Nat.pow_lt_iff_lt_left → Nat.pow_lt_pow_iff_left

Lemmas added

pow_le_pow_iff_left
pow_lt_pow_iff_left
pow_right_injective
pow_right_inj
Nat.pow_le_pow_left to have the correct name since Nat.pow_le_pow_of_le_left is in Std.
Nat.pow_le_pow_right to have the correct name since Nat.pow_le_pow_of_le_right is in Std.

Lemmas removed

self_le_pow was a duplicate of le_self_pow.
Nat.pow_lt_pow_of_lt_right is defeq to pow_lt_pow_right.
Nat.pow_right_strictMono is defeq to pow_right_strictMono.
Nat.pow_le_iff_le_right is defeq to pow_le_pow_iff_right.
Nat.pow_lt_iff_lt_right is defeq to pow_lt_pow_iff_right.

Other changes

A bunch of proofs have been golfed.
Some lemma assumptions have been turned from 0 < n or 1 ≤ n to n ≠ 0.
A few Nat lemmas have been protected.
One docstring has been fixed.

d61c95e1

Diff

@@ -74,7 +74,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     rw [dist_eq_norm, add_sub_cancel, div_mul_eq_div_div, ← add_div, ← add_div, add_self_div_two,
       div_le_iff' (by positivity : 0 < (n : ℝ)), ← nsmul_eq_mul]
     refine' (le_add_order_smul_norm_of_isOfFinAddOrder (hu.of_mem_zmultiples hg) hg').trans
-      (nsmul_le_nsmul (norm_nonneg g) _)
+      (nsmul_le_nsmul_left (norm_nonneg g) _)
     exact Nat.le_of_dvd (addOrderOf_pos_iff.mpr hu) (addOrderOf_dvd_of_mem_zmultiples hg)
   · -- `∀ (g : G), QuasiMeasurePreserving (VAdd.vadd g) volume volume`
     exact fun g => quasiMeasurePreserving_add_left (G := AddCircle T) volume g

f2ce6086

chore: space after ← (#8178)

Co-authored-by: Moritz Firsching <firsching@google.com>

5fb9beab

Diff

@@ -83,7 +83,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples.to_subtype
     have hG_card : (Finset.univ : Finset G).card = n := by
       show _ = addOrderOf u
-      rw [←Nat.card_zmultiples, Nat.card_eq_fintype_card]; rfl
+      rw [← Nat.card_zmultiples, Nat.card_eq_fintype_card]; rfl
     simp_rw [measure_vadd]
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closedBall, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
@@ -101,7 +101,7 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
   have hsG : ∀ g : G, (g +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s := by
     rintro ⟨y, hy⟩; exact (vadd_ae_eq_self_of_mem_zmultiples hs hy : _)
   rw [(isAddFundamentalDomain_of_ae_ball I u x hu hI).measure_eq_card_smul_of_vadd_ae_eq_self s hsG,
-    ←Nat.card_zmultiples u, Nat.card_eq_fintype_card]
+    ← Nat.card_zmultiples u, Nat.card_eq_fintype_card]
 #align add_circle.volume_of_add_preimage_eq AddCircle.volume_of_add_preimage_eq
 
 end AddCircle

f2ce6086

feat: Order of elements of a subgroup (#8385)

The cardinality of a subgroup is greater than the order of any of its elements.

Rename

order_eq_card_zpowers → Fintype.card_zpowers
order_eq_card_zpowers' → Nat.card_zpowers (and turn it around to match Nat.card_subgroupPowers)
Submonoid.powers_subset → Submonoid.powers_le
orderOf_dvd_card_univ → orderOf_dvd_card
orderOf_subgroup → Subgroup.orderOf
Subgroup.nonempty → Subgroup.coe_nonempty

ee3bd06d

Diff

@@ -80,10 +80,10 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
     exact fun g => quasiMeasurePreserving_add_left (G := AddCircle T) volume g
   · -- `volume univ ≤ ∑' (g : G), volume (g +ᵥ I)`
     replace hI := hI.trans closedBall_ae_eq_ball.symm
-    haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples
+    haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples.to_subtype
     have hG_card : (Finset.univ : Finset G).card = n := by
       show _ = addOrderOf u
-      rw [add_order_eq_card_zmultiples', Nat.card_eq_fintype_card]; rfl
+      rw [←Nat.card_zmultiples, Nat.card_eq_fintype_card]; rfl
     simp_rw [measure_vadd]
     rw [AddCircle.measure_univ, tsum_fintype, Finset.sum_const, measure_congr hI,
       volume_closedBall, ← ENNReal.ofReal_nsmul, mul_div, mul_div_mul_comm,
@@ -97,11 +97,11 @@ theorem volume_of_add_preimage_eq (s I : Set <| AddCircle T) (u x : AddCircle T)
     (hI : I =ᵐ[volume] ball x (T / (2 * addOrderOf u))) :
     volume s = addOrderOf u • volume (s ∩ I) := by
   let G := AddSubgroup.zmultiples u
-  haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples
+  haveI : Fintype G := @Fintype.ofFinite _ hu.finite_zmultiples.to_subtype
   have hsG : ∀ g : G, (g +ᵥ s : Set <| AddCircle T) =ᵐ[volume] s := by
     rintro ⟨y, hy⟩; exact (vadd_ae_eq_self_of_mem_zmultiples hs hy : _)
   rw [(isAddFundamentalDomain_of_ae_ball I u x hu hI).measure_eq_card_smul_of_vadd_ae_eq_self s hsG,
-    add_order_eq_card_zmultiples' u, Nat.card_eq_fintype_card]
+    ←Nat.card_zmultiples u, Nat.card_eq_fintype_card]
 #align add_circle.volume_of_add_preimage_eq AddCircle.volume_of_add_preimage_eq
 
 end AddCircle

f2ce6086

chore: Generalise lemmas from finite groups to torsion elements (#8342)

Many lemmas in GroupTheory.OrderOfElement were stated for elements of finite groups even though they work more generally for torsion elements of possibly infinite groups. This PR generalises those lemmas (and leaves convenience lemmas stated for finite groups), and fixes a bunch of names to use dot notation.

Renames

Function.eq_of_lt_minimalPeriod_of_iterate_eq → Function.iterate_injOn_Iio_minimalPeriod
Function.eq_iff_lt_minimalPeriod_of_iterate_eq → Function.iterate_eq_iterate_iff_of_lt_minimalPeriod
isOfFinOrder_iff_coe → Submonoid.isOfFinOrder_coe
orderOf_pos' → IsOfFinOrder.orderOf_pos
pow_eq_mod_orderOf → pow_mod_orderOf (and turned around)
pow_injective_of_lt_orderOf → pow_injOn_Iio_orderOf
mem_powers_iff_mem_range_order_of' → IsOfFinOrder.mem_powers_iff_mem_range_orderOf
orderOf_pow'' → IsOfFinOrder.orderOf_pow
orderOf_pow_coprime → Nat.Coprime.orderOf_pow
zpow_eq_mod_orderOf → zpow_mod_orderOf (and turned around)
exists_pow_eq_one → isOfFinOrder_of_finite
pow_apply_eq_pow_mod_orderOf_cycleOf_apply → pow_mod_orderOf_cycleOf_apply

New lemmas

IsOfFinOrder.powers_eq_image_range_orderOf
IsOfFinOrder.natCard_powers_le_orderOf
IsOfFinOrder.finite_powers
finite_powers
infinite_powers
Nat.card_submonoidPowers
IsOfFinOrder.mem_powers_iff_mem_zpowers
IsOfFinOrder.powers_eq_zpowers
IsOfFinOrder.mem_zpowers_iff_mem_range_orderOf
IsOfFinOrder.exists_pow_eq_one

Other changes

Move decidableMemPowers/fintypePowers to GroupTheory.Submonoid.Membership and decidableMemZpowers/fintypeZpowers to GroupTheory.Subgroup.ZPowers.
finEquivPowers, finEquivZpowers, powersEquivPowers and zpowersEquivZpowers now assume IsOfFinTorsion x instead of Finite G.
isOfFinOrder_iff_pow_eq_one now takes one less explicit argument.
Delete Equiv.Perm.IsCycle.exists_pow_eq_one since it was saying that a permutation over a finite type is torsion, but this is trivial since the group of permutation is itself finite, so we can use isOfFinOrder_of_finite instead.

771e087d

Diff

@@ -57,7 +57,7 @@ theorem isAddFundamentalDomain_of_ae_ball (I : Set <| AddCircle T) (u x : AddCir
   set G := AddSubgroup.zmultiples u
   set n := addOrderOf u
   set B := ball x (T / (2 * n))
-  have hn : 1 ≤ (n : ℝ) := by norm_cast; linarith [addOrderOf_pos' hu]
+  have hn : 1 ≤ (n : ℝ) := by norm_cast; linarith [hu.addOrderOf_pos]
   refine' IsAddFundamentalDomain.mk_of_measure_univ_le _ _ _ _
   · -- `NullMeasurableSet I volume`
     exact measurableSet_ball.nullMeasurableSet.congr hI.symm

f2ce6086

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

@@ -2,15 +2,12 @@
 Copyright (c) 2022 Oliver Nash. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Oliver Nash
-
-! This file was ported from Lean 3 source module measure_theory.group.add_circle
-! leanprover-community/mathlib commit f2ce6086713c78a7f880485f7917ea547a215982
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.MeasureTheory.Integral.Periodic
 import Mathlib.Data.ZMod.Quotient
 
+#align_import measure_theory.group.add_circle from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
+
 /-!
 # Measure-theoretic results about the additive circle

f2ce6086

feat: port MeasureTheory.Group.AddCircle (#5245)

40442633

`measure_theory.group.add_circle` ⟷ `Mathlib.MeasureTheory.Group.AddCircle`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Renames

`Algebra.GroupPower.Order`

`Algebra.GroupPower.CovariantClass`

`Data.Nat.Pow`

Lemmas added

Lemmas removed

Other changes

Renames

New lemmas

Other changes

Dependencies 12 + 1014

measure_theory.group.add_circle ⟷ Mathlib.MeasureTheory.Group.AddCircle

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Renames

Algebra.GroupPower.Order

Algebra.GroupPower.CovariantClass

Data.Nat.Pow

Lemmas added

Lemmas removed

Other changes

Renames

New lemmas

Other changes

Dependencies 12 + 1014

`measure_theory.group.add_circle` ⟷ `Mathlib.MeasureTheory.Group.AddCircle`

`Algebra.GroupPower.Order`

`Algebra.GroupPower.CovariantClass`

`Data.Nat.Pow`