ring_theory.localization.away.adjoin_root

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

a7c017d7

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

c2092722

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) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Mario Carneiro, Johan Commelin, Amelia Livingston, Anne Baanen
 -/
-import Mathbin.RingTheory.AdjoinRoot
-import Mathbin.RingTheory.Localization.Away.Basic
+import RingTheory.AdjoinRoot
+import RingTheory.Localization.Away.Basic
 
 #align_import ring_theory.localization.away.adjoin_root from "leanprover-community/mathlib"@"c20927220ef87bb4962ba08bf6da2ce3cf50a6dd"

c2092722

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) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Mario Carneiro, Johan Commelin, Amelia Livingston, Anne Baanen
-
-! This file was ported from Lean 3 source module ring_theory.localization.away.adjoin_root
-! leanprover-community/mathlib commit c20927220ef87bb4962ba08bf6da2ce3cf50a6dd
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.RingTheory.AdjoinRoot
 import Mathbin.RingTheory.Localization.Away.Basic
 
+#align_import ring_theory.localization.away.adjoin_root from "leanprover-community/mathlib"@"c20927220ef87bb4962ba08bf6da2ce3cf50a6dd"
+
 /-!
 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
 > Any changes to this file require a corresponding PR to mathlib4.

c2092722

bump to nightly-2023-06-08-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/31c24aa72e7b3e5ed97a8412470e904f82b81004

8f04dc2b

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Mario Carneiro, Johan Commelin, Amelia Livingston, Anne Baanen
 
 ! This file was ported from Lean 3 source module ring_theory.localization.away.adjoin_root
-! leanprover-community/mathlib commit a7c017d750512a352b623b1824d75da5998457d0
+! leanprover-community/mathlib commit c20927220ef87bb4962ba08bf6da2ce3cf50a6dd
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -12,6 +12,9 @@ import Mathbin.RingTheory.AdjoinRoot
 import Mathbin.RingTheory.Localization.Away.Basic
 
 /-!
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 The `R`-`alg_equiv` between the localization of `R` away from `r` and
 `R` with an inverse of `r` adjoined.
 -/

a7c017d7

bump to nightly-2023-06-06-15

mathlib commit https://github.com/leanprover-community/mathlib/commit/a3209ddf94136d36e5e5c624b10b2a347cc9d090

17c29943

Diff

@@ -23,26 +23,32 @@ variable {R : Type _} [CommRing R]
 
 attribute [local instance] IsLocalization.algHom_subsingleton AdjoinRoot.algHom_subsingleton
 
+#print Localization.awayEquivAdjoin /-
 /-- The `R`-`alg_equiv` between the localization of `R` away from `r` and
     `R` with an inverse of `r` adjoined. -/
 noncomputable def Localization.awayEquivAdjoin (r : R) : Away r ≃ₐ[R] AdjoinRoot (C r * X - 1) :=
   AlgEquiv.ofAlgHom
     { awayLift _ r _ with
       commutes' :=
-        IsLocalization.Away.AwayMap.lift_eq r (isUnit_of_mul_eq_one _ _ <| root_is_inv r) }
+        IsLocalization.Away.AwayMap.lift_eq r (isUnit_of_mul_eq_one _ _ <| root_isInv r) }
     (liftHom _ (IsLocalization.Away.invSelf r) <| by
       simp only [map_sub, map_mul, aeval_C, aeval_X, IsLocalization.Away.mul_invSelf, aeval_one,
         sub_self])
     (Subsingleton.elim _ _) (Subsingleton.elim _ _)
 #align localization.away_equiv_adjoin Localization.awayEquivAdjoin
+-/
 
+#print IsLocalization.adjoin_inv /-
 theorem IsLocalization.adjoin_inv (r : R) : IsLocalization.Away r (AdjoinRoot <| C r * X - 1) :=
   IsLocalization.isLocalization_of_algEquiv _ (Localization.awayEquivAdjoin r)
 #align is_localization.adjoin_inv IsLocalization.adjoin_inv
+-/
 
+#print IsLocalization.Away.finitePresentation /-
 theorem IsLocalization.Away.finitePresentation (r : R) {S} [CommRing S] [Algebra R S]
     [IsLocalization.Away r S] : Algebra.FinitePresentation R S :=
   (AdjoinRoot.finitePresentation _).Equiv <|
     (Localization.awayEquivAdjoin r).symm.trans <| IsLocalization.algEquiv (Submonoid.powers r) _ _
 #align is_localization.away.finite_presentation IsLocalization.Away.finitePresentation
+-/

a7c017d7

bump to nightly-2023-05-20-03

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

0efc566e

Changes in mathlib4

mathlib3

mathlib4

a7c017d7

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

@@ -15,7 +15,7 @@ The `R`-`AlgEquiv` between the localization of `R` away from `r` and
 
 open Polynomial AdjoinRoot Localization
 
-variable {R : Type _} [CommRing R]
+variable {R : Type*} [CommRing R]
 
 -- Porting note: removed `IsLocalization.algHom_subsingleton` due to
 -- `cannot find synthesization order for instance`

a7c017d7

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) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Mario Carneiro, Johan Commelin, Amelia Livingston, Anne Baanen
-
-! This file was ported from Lean 3 source module ring_theory.localization.away.adjoin_root
-! leanprover-community/mathlib commit a7c017d750512a352b623b1824d75da5998457d0
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.RingTheory.AdjoinRoot
 import Mathlib.RingTheory.Localization.Away.Basic
 
+#align_import ring_theory.localization.away.adjoin_root from "leanprover-community/mathlib"@"a7c017d750512a352b623b1824d75da5998457d0"
+
 /-!
 The `R`-`AlgEquiv` between the localization of `R` away from `r` and
 `R` with an inverse of `r` adjoined.

a7c017d7

feat: port RingTheory.Localization.Away.AdjoinRoot (#4725)

41086ad7

`ring_theory.localization.away.adjoin_root` ⟷ `Mathlib.RingTheory.Localization.Away.AdjoinRoot`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 10 + 637

ring_theory.localization.away.adjoin_root ⟷ Mathlib.RingTheory.Localization.Away.AdjoinRoot

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 10 + 637

`ring_theory.localization.away.adjoin_root` ⟷ `Mathlib.RingTheory.Localization.Away.AdjoinRoot`