topology.uniform_space.compare_reals | 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

e1a7bdeb

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

69c6a5a1

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,10 +3,10 @@ Copyright (c) 2019 Patrick MAssot. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
 -/
-import Mathbin.Topology.UniformSpace.AbsoluteValue
-import Mathbin.Topology.Instances.Real
-import Mathbin.Topology.Instances.Rat
-import Mathbin.Topology.UniformSpace.Completion
+import Topology.UniformSpace.AbsoluteValue
+import Topology.Instances.Real
+import Topology.Instances.Rat
+import Topology.UniformSpace.Completion
 
 #align_import topology.uniform_space.compare_reals from "leanprover-community/mathlib"@"69c6a5a12d8a2b159f20933e60115a4f2de62b58"

69c6a5a1

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,17 +2,14 @@
 Copyright (c) 2019 Patrick MAssot. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
-
-! This file was ported from Lean 3 source module topology.uniform_space.compare_reals
-! leanprover-community/mathlib commit 69c6a5a12d8a2b159f20933e60115a4f2de62b58
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Topology.UniformSpace.AbsoluteValue
 import Mathbin.Topology.Instances.Real
 import Mathbin.Topology.Instances.Rat
 import Mathbin.Topology.UniformSpace.Completion
 
+#align_import topology.uniform_space.compare_reals from "leanprover-community/mathlib"@"69c6a5a12d8a2b159f20933e60115a4f2de62b58"
+
 /-!
 # Comparison of Cauchy reals and Bourbaki reals

69c6a5a1

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -120,10 +120,12 @@ instance Bourbaki.uniformSpace : UniformSpace Bourbakiℝ :=
 #align compare_reals.bourbaki.uniform_space CompareReals.Bourbaki.uniformSpace
 -/
 
+#print CompareReals.bourbakiPkg /-
 /-- Bourbaki reals packaged as a completion of Q using the general theory. -/
 def bourbakiPkg : AbstractCompletion Q :=
   Completion.cPkg
 #align compare_reals.Bourbaki_pkg CompareReals.bourbakiPkg
+-/
 
 #print CompareReals.compareEquiv /-
 /-- The uniform bijection between Bourbaki and Cauchy reals. -/
@@ -132,13 +134,17 @@ noncomputable def compareEquiv : Bourbakiℝ ≃ᵤ ℝ :=
 #align compare_reals.compare_equiv CompareReals.compareEquiv
 -/
 
+#print CompareReals.compare_uc /-
 theorem compare_uc : UniformContinuous compareEquiv :=
   bourbakiPkg.uniformContinuous_compareEquiv _
 #align compare_reals.compare_uc CompareReals.compare_uc
+-/
 
+#print CompareReals.compare_uc_symm /-
 theorem compare_uc_symm : UniformContinuous compareEquiv.symm :=
   bourbakiPkg.uniformContinuous_compareEquiv_symm _
 #align compare_reals.compare_uc_symm CompareReals.compare_uc_symm
+-/
 
 end CompareReals

69c6a5a1

bump to nightly-2023-06-01-16

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

b9c87c70

Diff

@@ -98,7 +98,8 @@ instead of the metric space one. We proved in rat.uniform_space_eq that they are
 but they are not definitionaly equal, so it would confuse the type class system (and probably
 also human readers). -/
 def Q :=
-  ℚ deriving CommRing, Inhabited
+  ℚ
+deriving CommRing, Inhabited
 #align compare_reals.Q CompareReals.Q
 -/
 
@@ -108,7 +109,8 @@ instance : UniformSpace Q :=
 #print CompareReals.Bourbakiℝ /-
 /-- Real numbers constructed as in Bourbaki. -/
 def Bourbakiℝ : Type :=
-  Completion Q deriving Inhabited
+  Completion Q
+deriving Inhabited
 #align compare_reals.Bourbakiℝ CompareReals.Bourbakiℝ
 -/

69c6a5a1

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -118,12 +118,6 @@ instance Bourbaki.uniformSpace : UniformSpace Bourbakiℝ :=
 #align compare_reals.bourbaki.uniform_space CompareReals.Bourbaki.uniformSpace
 -/
 
-/- warning: compare_reals.Bourbaki_pkg -> CompareReals.bourbakiPkg is a dubious translation:
-lean 3 declaration is
-  AbstractCompletion.{0} CompareReals.Q CompareReals.Q.uniformSpace
-but is expected to have type
-  AbstractCompletion.{0} CompareReals.Q CompareReals.uniformSpace
-Case conversion may be inaccurate. Consider using '#align compare_reals.Bourbaki_pkg CompareReals.bourbakiPkgₓ'. -/
 /-- Bourbaki reals packaged as a completion of Q using the general theory. -/
 def bourbakiPkg : AbstractCompletion Q :=
   Completion.cPkg
@@ -136,22 +130,10 @@ noncomputable def compareEquiv : Bourbakiℝ ≃ᵤ ℝ :=
 #align compare_reals.compare_equiv CompareReals.compareEquiv
 -/
 
-/- warning: compare_reals.compare_uc -> CompareReals.compare_uc is a dubious translation:
-lean 3 declaration is
-  UniformContinuous.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) (coeFn.{1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) (fun (_x : UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) => CompareReals.Bourbakiℝ -> Real) (UniformEquiv.hasCoeToFun.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.compareEquiv)
-but is expected to have type
-  UniformContinuous.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) (FunLike.coe.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ (fun (_x : CompareReals.Bourbakiℝ) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : CompareReals.Bourbakiℝ) => Real) _x) (EmbeddingLike.toFunLike.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ Real (EquivLike.toEmbeddingLike.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ Real (UniformEquiv.instEquivLikeUniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)))) CompareReals.compareEquiv)
-Case conversion may be inaccurate. Consider using '#align compare_reals.compare_uc CompareReals.compare_ucₓ'. -/
 theorem compare_uc : UniformContinuous compareEquiv :=
   bourbakiPkg.uniformContinuous_compareEquiv _
 #align compare_reals.compare_uc CompareReals.compare_uc
 
-/- warning: compare_reals.compare_uc_symm -> CompareReals.compare_uc_symm is a dubious translation:
-lean 3 declaration is
-  UniformContinuous.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace (coeFn.{1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) (fun (_x : UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) => Real -> CompareReals.Bourbakiℝ) (UniformEquiv.hasCoeToFun.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) (UniformEquiv.symm.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.compareEquiv))
-but is expected to have type
-  UniformContinuous.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace (FunLike.coe.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real (fun (_x : Real) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : Real) => CompareReals.Bourbakiℝ) _x) (EmbeddingLike.toFunLike.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real CompareReals.Bourbakiℝ (EquivLike.toEmbeddingLike.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real CompareReals.Bourbakiℝ (UniformEquiv.instEquivLikeUniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace))) (UniformEquiv.symm.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.compareEquiv))
-Case conversion may be inaccurate. Consider using '#align compare_reals.compare_uc_symm CompareReals.compare_uc_symmₓ'. -/
 theorem compare_uc_symm : UniformContinuous compareEquiv.symm :=
   bourbakiPkg.uniformContinuous_compareEquiv_symm _
 #align compare_reals.compare_uc_symm CompareReals.compare_uc_symm

69c6a5a1

bump to nightly-2023-03-14-02

mathlib commit https://github.com/leanprover-community/mathlib/commit/2196ab363eb097c008d4497125e0dde23fb36db2

d4b38a42

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
 
 ! This file was ported from Lean 3 source module topology.uniform_space.compare_reals
-! leanprover-community/mathlib commit e1a7bdeb4fd826b7e71d130d34988f0a2d26a177
+! leanprover-community/mathlib commit 69c6a5a12d8a2b159f20933e60115a4f2de62b58
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -16,6 +16,9 @@ import Mathbin.Topology.UniformSpace.Completion
 /-!
 # Comparison of Cauchy reals and Bourbaki reals
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 In `data.real.basic` real numbers are defined using the so called Cauchy construction (although
 it is due to Georg Cantor). More precisely, this construction applies to commutative rings equipped
 with an absolute value with values in a linear ordered field.

e1a7bdeb

bump to nightly-2023-03-08-22

mathlib commit https://github.com/leanprover-community/mathlib/commit/38f16f960f5006c6c0c2bac7b0aba5273188f4e5

fb83156a

Diff

@@ -58,6 +58,7 @@ real numbers, completion, uniform spaces
 
 open Set Function Filter CauSeq UniformSpace
 
+#print Rat.uniformSpace_eq /-
 /-- The metric space uniform structure on ℚ (which presupposes the existence
 of real numbers) agrees with the one coming directly from (abs : ℚ → ℚ). -/
 theorem Rat.uniformSpace_eq :
@@ -68,7 +69,9 @@ theorem Rat.uniformSpace_eq :
   simp only [Rat.dist_eq, AbsoluteValue.abs_apply, ← Rat.cast_sub, ← Rat.cast_abs, Rat.cast_lt,
     abs_sub_comm]
 #align rat.uniform_space_eq Rat.uniformSpace_eq
+-/
 
+#print rationalCauSeqPkg /-
 /-- Cauchy reals packaged as a completion of ℚ using the absolute value route. -/
 def rationalCauSeqPkg : @AbstractCompletion ℚ <| (@AbsoluteValue.abs ℚ _).UniformSpace
     where
@@ -82,9 +85,11 @@ def rationalCauSeqPkg : @AbstractCompletion ℚ <| (@AbsoluteValue.abs ℚ _).Un
     exact rat.uniform_embedding_coe_real.to_uniform_inducing
   dense := Rat.denseEmbedding_coe_real.dense
 #align rational_cau_seq_pkg rationalCauSeqPkg
+-/
 
 namespace CompareReals
 
+#print CompareReals.Q /-
 /-- Type wrapper around ℚ to make sure the absolute value uniform space instance is picked up
 instead of the metric space one. We proved in rat.uniform_space_eq that they are equal,
 but they are not definitionaly equal, so it would confuse the type class system (and probably
@@ -92,33 +97,58 @@ also human readers). -/
 def Q :=
   ℚ deriving CommRing, Inhabited
 #align compare_reals.Q CompareReals.Q
+-/
 
 instance : UniformSpace Q :=
   (@AbsoluteValue.abs ℚ _).UniformSpace
 
+#print CompareReals.Bourbakiℝ /-
 /-- Real numbers constructed as in Bourbaki. -/
 def Bourbakiℝ : Type :=
   Completion Q deriving Inhabited
 #align compare_reals.Bourbakiℝ CompareReals.Bourbakiℝ
+-/
 
+#print CompareReals.Bourbaki.uniformSpace /-
 instance Bourbaki.uniformSpace : UniformSpace Bourbakiℝ :=
   Completion.uniformSpace Q
 #align compare_reals.bourbaki.uniform_space CompareReals.Bourbaki.uniformSpace
+-/
 
+/- warning: compare_reals.Bourbaki_pkg -> CompareReals.bourbakiPkg is a dubious translation:
+lean 3 declaration is
+  AbstractCompletion.{0} CompareReals.Q CompareReals.Q.uniformSpace
+but is expected to have type
+  AbstractCompletion.{0} CompareReals.Q CompareReals.uniformSpace
+Case conversion may be inaccurate. Consider using '#align compare_reals.Bourbaki_pkg CompareReals.bourbakiPkgₓ'. -/
 /-- Bourbaki reals packaged as a completion of Q using the general theory. -/
 def bourbakiPkg : AbstractCompletion Q :=
   Completion.cPkg
 #align compare_reals.Bourbaki_pkg CompareReals.bourbakiPkg
 
+#print CompareReals.compareEquiv /-
 /-- The uniform bijection between Bourbaki and Cauchy reals. -/
 noncomputable def compareEquiv : Bourbakiℝ ≃ᵤ ℝ :=
   bourbakiPkg.compareEquiv rationalCauSeqPkg
 #align compare_reals.compare_equiv CompareReals.compareEquiv
+-/
 
+/- warning: compare_reals.compare_uc -> CompareReals.compare_uc is a dubious translation:
+lean 3 declaration is
+  UniformContinuous.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) (coeFn.{1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) (fun (_x : UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) => CompareReals.Bourbakiℝ -> Real) (UniformEquiv.hasCoeToFun.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.compareEquiv)
+but is expected to have type
+  UniformContinuous.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) (FunLike.coe.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ (fun (_x : CompareReals.Bourbakiℝ) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : CompareReals.Bourbakiℝ) => Real) _x) (EmbeddingLike.toFunLike.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ Real (EquivLike.toEmbeddingLike.{1, 1, 1} (UniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)) CompareReals.Bourbakiℝ Real (UniformEquiv.instEquivLikeUniformEquiv.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace)))) CompareReals.compareEquiv)
+Case conversion may be inaccurate. Consider using '#align compare_reals.compare_uc CompareReals.compare_ucₓ'. -/
 theorem compare_uc : UniformContinuous compareEquiv :=
   bourbakiPkg.uniformContinuous_compareEquiv _
 #align compare_reals.compare_uc CompareReals.compare_uc
 
+/- warning: compare_reals.compare_uc_symm -> CompareReals.compare_uc_symm is a dubious translation:
+lean 3 declaration is
+  UniformContinuous.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace (coeFn.{1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) (fun (_x : UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) => Real -> CompareReals.Bourbakiℝ) (UniformEquiv.hasCoeToFun.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) (UniformEquiv.symm.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.compareEquiv))
+but is expected to have type
+  UniformContinuous.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace (FunLike.coe.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real (fun (_x : Real) => (fun (x._@.Mathlib.Data.FunLike.Embedding._hyg.19 : Real) => CompareReals.Bourbakiℝ) _x) (EmbeddingLike.toFunLike.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real CompareReals.Bourbakiℝ (EquivLike.toEmbeddingLike.{1, 1, 1} (UniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace) Real CompareReals.Bourbakiℝ (UniformEquiv.instEquivLikeUniformEquiv.{0, 0} Real CompareReals.Bourbakiℝ (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.Bourbaki.uniformSpace))) (UniformEquiv.symm.{0, 0} CompareReals.Bourbakiℝ Real CompareReals.Bourbaki.uniformSpace (PseudoMetricSpace.toUniformSpace.{0} Real Real.pseudoMetricSpace) CompareReals.compareEquiv))
+Case conversion may be inaccurate. Consider using '#align compare_reals.compare_uc_symm CompareReals.compare_uc_symmₓ'. -/
 theorem compare_uc_symm : UniformContinuous compareEquiv.symm :=
   bourbakiPkg.uniformContinuous_compareEquiv_symm _
 #align compare_reals.compare_uc_symm CompareReals.compare_uc_symm

e1a7bdeb

bump to nightly-2023-03-01-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/4c586d291f189eecb9d00581aeb3dd998ac34442

d0348377

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
 
 ! This file was ported from Lean 3 source module topology.uniform_space.compare_reals
-! leanprover-community/mathlib commit 9f972c7eb9598ebf4159c65e7a7a776961d2d6f0
+! leanprover-community/mathlib commit e1a7bdeb4fd826b7e71d130d34988f0a2d26a177
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -61,28 +61,16 @@ open Set Function Filter CauSeq UniformSpace
 /-- The metric space uniform structure on ℚ (which presupposes the existence
 of real numbers) agrees with the one coming directly from (abs : ℚ → ℚ). -/
 theorem Rat.uniformSpace_eq :
-    IsAbsoluteValue.uniformSpace (abs : ℚ → ℚ) = PseudoMetricSpace.toUniformSpace :=
+    (AbsoluteValue.abs : AbsoluteValue ℚ ℚ).UniformSpace = PseudoMetricSpace.toUniformSpace :=
   by
   ext s
-  erw [Metric.mem_uniformity_dist, IsAbsoluteValue.mem_uniformity]
-  constructor <;> rintro ⟨ε, ε_pos, h⟩
-  · use ε, by exact_mod_cast ε_pos
-    intro a b hab
-    apply h
-    rw [Rat.dist_eq, abs_sub_comm] at hab
-    exact_mod_cast hab
-  · obtain ⟨ε', h', h''⟩ : ∃ ε' : ℚ, 0 < ε' ∧ (ε' : ℝ) < ε
-    exact exists_pos_rat_lt ε_pos
-    use ε', h'
-    intro a b hab
-    apply h
-    rw [Rat.dist_eq, abs_sub_comm]
-    refine' lt_trans _ h''
-    exact_mod_cast hab
+  rw [(AbsoluteValue.hasBasis_uniformity _).mem_iff, metric.uniformity_basis_dist_rat.mem_iff]
+  simp only [Rat.dist_eq, AbsoluteValue.abs_apply, ← Rat.cast_sub, ← Rat.cast_abs, Rat.cast_lt,
+    abs_sub_comm]
 #align rat.uniform_space_eq Rat.uniformSpace_eq
 
 /-- Cauchy reals packaged as a completion of ℚ using the absolute value route. -/
-def rationalCauSeqPkg : @AbstractCompletion ℚ <| IsAbsoluteValue.uniformSpace (abs : ℚ → ℚ)
+def rationalCauSeqPkg : @AbstractCompletion ℚ <| (@AbsoluteValue.abs ℚ _).UniformSpace
     where
   Space := ℝ
   coe := (coe : ℚ → ℝ)
@@ -106,7 +94,7 @@ def Q :=
 #align compare_reals.Q CompareReals.Q
 
 instance : UniformSpace Q :=
-  IsAbsoluteValue.uniformSpace (abs : ℚ → ℚ)
+  (@AbsoluteValue.abs ℚ _).UniformSpace
 
 /-- Real numbers constructed as in Bourbaki. -/
 def Bourbakiℝ : Type :=

9f972c7e

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

e1a7bdeb

chore: remove some mathlib3 names in doc comments (#11931)

053d79fa

Diff

@@ -82,7 +82,7 @@ def rationalCauSeqPkg : @AbstractCompletion ℚ <| (@AbsoluteValue.abs ℚ _).un
 namespace CompareReals
 
 /-- Type wrapper around ℚ to make sure the absolute value uniform space instance is picked up
-instead of the metric space one. We proved in rat.uniform_space_eq that they are equal,
+instead of the metric space one. We proved in `Rat.uniformSpace_eq` that they are equal,
 but they are not definitionaly equal, so it would confuse the type class system (and probably
 also human readers). -/
 def Q :=

e1a7bdeb

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

@@ -2,17 +2,14 @@
 Copyright (c) 2019 Patrick Massot. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
-
-! This file was ported from Lean 3 source module topology.uniform_space.compare_reals
-! leanprover-community/mathlib commit e1a7bdeb4fd826b7e71d130d34988f0a2d26a177
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Topology.UniformSpace.AbsoluteValue
 import Mathlib.Topology.Instances.Real
 import Mathlib.Topology.Instances.Rat
 import Mathlib.Topology.UniformSpace.Completion
 
+#align_import topology.uniform_space.compare_reals from "leanprover-community/mathlib"@"e1a7bdeb4fd826b7e71d130d34988f0a2d26a177"
+
 /-!
 # Comparison of Cauchy reals and Bourbaki reals

e1a7bdeb

chore: formatting issues (#4947)

Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au> Co-authored-by: Parcly Taxel <reddeloostw@gmail.com>

5068808d

Diff

@@ -70,16 +70,16 @@ theorem Rat.uniformSpace_eq :
 
 /-- Cauchy reals packaged as a completion of ℚ using the absolute value route. -/
 def rationalCauSeqPkg : @AbstractCompletion ℚ <| (@AbsoluteValue.abs ℚ _).uniformSpace :=
-@AbstractCompletion.mk
-  (space := ℝ)
-  (coe := ((↑) : ℚ → ℝ))
-  (uniformStruct := by infer_instance)
-  (complete := by infer_instance)
-  (separation := by infer_instance)
-  (uniformInducing := by
-    rw [Rat.uniformSpace_eq]
-    exact Rat.uniformEmbedding_coe_real.toUniformInducing)
-  (dense := Rat.denseEmbedding_coe_real.dense)
+  @AbstractCompletion.mk
+    (space := ℝ)
+    (coe := ((↑) : ℚ → ℝ))
+    (uniformStruct := by infer_instance)
+    (complete := by infer_instance)
+    (separation := by infer_instance)
+    (uniformInducing := by
+      rw [Rat.uniformSpace_eq]
+      exact Rat.uniformEmbedding_coe_real.toUniformInducing)
+    (dense := Rat.denseEmbedding_coe_real.dense)
 #align rational_cau_seq_pkg rationalCauSeqPkg
 
 namespace CompareReals

e1a7bdeb

chore: fix many typos (#4967)

These are all doc fixes

6f9e51c3

Diff

@@ -1,5 +1,5 @@
 /-
-Copyright (c) 2019 Patrick MAssot. All rights reserved.
+Copyright (c) 2019 Patrick Massot. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Patrick Massot
 
@@ -41,7 +41,7 @@ TODO:
 ## Implementation notes
 
 The heavy work is done in `Topology/UniformSpace/AbstractCompletion` which provides an abstract
-caracterization of completions of uniform spaces, and isomorphisms between them. The only work left
+characterization of completions of uniform spaces, and isomorphisms between them. The only work left
 here is to prove the uniform space structure coming from the absolute value on ℚ (with values in ℚ,
 not referring to ℝ) coincides with the one coming from the metric space structure (which of course
 does use ℝ).

e1a7bdeb

feat Port/Topology.UniformSpace.CompareReals (#2702)

Also names instances in Topology.UniformSpace.Completion

Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

68fcf1e0

`topology.uniform_space.compare_reals` ⟷ `Mathlib.Topology.UniformSpace.CompareReals`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 10 + 513

topology.uniform_space.compare_reals ⟷ Mathlib.Topology.UniformSpace.CompareReals

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 10 + 513

`topology.uniform_space.compare_reals` ⟷ `Mathlib.Topology.UniformSpace.CompareReals`