algebra.group.with_one.units | 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

4e87c847

(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) 2018 Mario Carneiro. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Johan Commelin
 -/
-import Mathbin.Algebra.Group.WithOne.Basic
-import Mathbin.Algebra.GroupWithZero.Units.Basic
+import Algebra.Group.WithOne.Basic
+import Algebra.GroupWithZero.Units.Basic
 
 #align_import algebra.group.with_one.units 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) 2018 Mario Carneiro. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Johan Commelin
-
-! This file was ported from Lean 3 source module algebra.group.with_one.units
-! 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.Algebra.Group.WithOne.Basic
 import Mathbin.Algebra.GroupWithZero.Units.Basic
 
+#align_import algebra.group.with_one.units from "leanprover-community/mathlib"@"448144f7ae193a8990cb7473c9e9a01990f64ac7"
+
 /-!
 # Isomorphism between a group and the units of itself adjoined with `0`

448144f7

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -25,6 +25,7 @@ This is here to keep `algebra.group_with_zero.units.basic` out of the import req
 
 namespace WithZero
 
+#print WithZero.unitsWithZeroEquiv /-
 /-- Any group is isomorphic to the units of itself adjoined with `0`. -/
 def unitsWithZeroEquiv {α : Type _} [Group α] : (WithZero α)ˣ ≃* α
     where
@@ -34,6 +35,7 @@ def unitsWithZeroEquiv {α : Type _} [Group α] : (WithZero α)ˣ ≃* α
   right_inv _ := rfl
   map_mul' _ _ := coe_inj.mp <| by simpa only [coe_unzero, coe_mul]
 #align with_zero.units_with_zero_equiv WithZero.unitsWithZeroEquiv
+-/
 
 end WithZero

448144f7

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -25,12 +25,6 @@ This is here to keep `algebra.group_with_zero.units.basic` out of the import req
 
 namespace WithZero
 
-/- warning: with_zero.units_with_zero_equiv -> WithZero.unitsWithZeroEquiv is a dubious translation:
-lean 3 declaration is
-  forall {α : Type.{u1}} [_inst_1 : Group.{u1} α], MulEquiv.{u1, u1} (Units.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))) α (MulOneClass.toHasMul.{u1} (Units.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))) (Units.mulOneClass.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1)))))) (MulOneClass.toHasMul.{u1} α (Monoid.toMulOneClass.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))
-but is expected to have type
-  forall {α : Type.{u1}} [_inst_1 : Group.{u1} α], MulEquiv.{u1, u1} (Units.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))) α (MulOneClass.toMul.{u1} (Units.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))) (Units.instMulOneClassUnits.{u1} (WithZero.{u1} α) (MonoidWithZero.toMonoid.{u1} (WithZero.{u1} α) (WithZero.monoidWithZero.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1)))))) (MulOneClass.toMul.{u1} α (Monoid.toMulOneClass.{u1} α (DivInvMonoid.toMonoid.{u1} α (Group.toDivInvMonoid.{u1} α _inst_1))))
-Case conversion may be inaccurate. Consider using '#align with_zero.units_with_zero_equiv WithZero.unitsWithZeroEquivₓ'. -/
 /-- Any group is isomorphic to the units of itself adjoined with `0`. -/
 def unitsWithZeroEquiv {α : Type _} [Group α] : (WithZero α)ˣ ≃* α
     where

448144f7

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

4e87c847

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

@@ -3,7 +3,8 @@ Copyright (c) 2018 Mario Carneiro. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Johan Commelin
 -/
-import Mathlib.Algebra.Group.WithOne.Basic
+import Mathlib.Algebra.Group.Equiv.Basic
+import Mathlib.Algebra.Group.WithOne.Defs
 import Mathlib.Algebra.GroupWithZero.Units.Basic
 
 #align_import algebra.group.with_one.units from "leanprover-community/mathlib"@"4e87c8477c6c38b753f050bc9664b94ee859896c"

4e87c847

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

@@ -20,7 +20,7 @@ This is here to keep `Algebra.GroupWithZero.Units.Basic` out of the import requi
 namespace WithZero
 
 /-- Any group is isomorphic to the units of itself adjoined with `0`. -/
-def unitsWithZeroEquiv {α : Type _} [Group α] : (WithZero α)ˣ ≃* α where
+def unitsWithZeroEquiv {α : Type*} [Group α] : (WithZero α)ˣ ≃* α where
   toFun a := unzero a.ne_zero
   invFun a := Units.mk0 a coe_ne_zero
   left_inv _ := Units.ext <| by simp only [coe_unzero, Units.mk0_val]

4e87c847

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 Mario Carneiro. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Johan Commelin
-
-! This file was ported from Lean 3 source module algebra.group.with_one.units
-! leanprover-community/mathlib commit 4e87c8477c6c38b753f050bc9664b94ee859896c
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.Group.WithOne.Basic
 import Mathlib.Algebra.GroupWithZero.Units.Basic
 
+#align_import algebra.group.with_one.units from "leanprover-community/mathlib"@"4e87c8477c6c38b753f050bc9664b94ee859896c"
+
 /-!
 # Isomorphism between a group and the units of itself adjoined with `0`

4e87c847

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

@@ -2,6 +2,11 @@
 Copyright (c) 2018 Mario Carneiro. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Mario Carneiro, Johan Commelin
+
+! This file was ported from Lean 3 source module algebra.group.with_one.units
+! leanprover-community/mathlib commit 4e87c8477c6c38b753f050bc9664b94ee859896c
+! Please do not edit these lines, except to modify the commit id
+! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.Group.WithOne.Basic
 import Mathlib.Algebra.GroupWithZero.Units.Basic

`algebra.group.with_one.units` ⟷ `Mathlib.Algebra.Group.WithOne.Units`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 45

algebra.group.with_one.units ⟷ Mathlib.Algebra.Group.WithOne.Units

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 45

`algebra.group.with_one.units` ⟷ `Mathlib.Algebra.Group.WithOne.Units`