algebra.star.big_operators | 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

008205aa

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

327c3c0d

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) 2021 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
 -/
-import Mathbin.Algebra.BigOperators.Basic
-import Mathbin.Algebra.Star.Basic
+import Algebra.BigOperators.Basic
+import Algebra.Star.Basic
 
 #align_import algebra.star.big_operators from "leanprover-community/mathlib"@"327c3c0d9232d80e250dc8f65e7835b82b266ea5"

327c3c0d

bump to nightly-2023-09-02-06

mathlib commit https://github.com/leanprover-community/mathlib/commit/442a83d738cb208d3600056c489be16900ba701d

a4ca67cb

Diff

@@ -23,7 +23,7 @@ open scoped BigOperators
 
 #print star_prod /-
 @[simp]
-theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :
+theorem star_prod [CommMonoid R] [StarMul R] {α : Type _} (s : Finset α) (f : α → R) :
     star (∏ x in s, f x) = ∏ x in s, star (f x) :=
   map_prod (starMulAut : R ≃* R) _ _
 #align star_prod star_prod

327c3c0d

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) 2021 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
-
-! This file was ported from Lean 3 source module algebra.star.big_operators
-! leanprover-community/mathlib commit 327c3c0d9232d80e250dc8f65e7835b82b266ea5
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.BigOperators.Basic
 import Mathbin.Algebra.Star.Basic
 
+#align_import algebra.star.big_operators from "leanprover-community/mathlib"@"327c3c0d9232d80e250dc8f65e7835b82b266ea5"
+
 /-! # Big-operators lemmas about `star` algebraic operations
 
 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4.

327c3c0d

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -24,15 +24,19 @@ variable {R : Type _}
 
 open scoped BigOperators
 
+#print star_prod /-
 @[simp]
 theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :
     star (∏ x in s, f x) = ∏ x in s, star (f x) :=
   map_prod (starMulAut : R ≃* R) _ _
 #align star_prod star_prod
+-/
 
+#print star_sum /-
 @[simp]
 theorem star_sum [AddCommMonoid R] [StarAddMonoid R] {α : Type _} (s : Finset α) (f : α → R) :
     star (∑ x in s, f x) = ∑ x in s, star (f x) :=
   (starAddEquiv : R ≃+ R).map_sum _ _
 #align star_sum star_sum
+-/

327c3c0d

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -22,7 +22,7 @@ These results are kept separate from `algebra.star.basic` to avoid it needing to
 
 variable {R : Type _}
 
-open BigOperators
+open scoped BigOperators
 
 @[simp]
 theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :

327c3c0d

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -24,24 +24,12 @@ variable {R : Type _}
 
 open BigOperators
 
-/- warning: star_prod -> star_prod is a dubious translation:
-lean 3 declaration is
-  forall {R : Type.{u1}} [_inst_1 : CommMonoid.{u1} R] [_inst_2 : StarSemigroup.{u1} R (Monoid.toSemigroup.{u1} R (CommMonoid.toMonoid.{u1} R _inst_1))] {α : Type.{u2}} (s : Finset.{u2} α) (f : α -> R), Eq.{succ u1} R (Star.star.{u1} R (InvolutiveStar.toHasStar.{u1} R (StarSemigroup.toHasInvolutiveStar.{u1} R (Monoid.toSemigroup.{u1} R (CommMonoid.toMonoid.{u1} R _inst_1)) _inst_2)) (Finset.prod.{u1, u2} R α _inst_1 s (fun (x : α) => f x))) (Finset.prod.{u1, u2} R α _inst_1 s (fun (x : α) => Star.star.{u1} R (InvolutiveStar.toHasStar.{u1} R (StarSemigroup.toHasInvolutiveStar.{u1} R (Monoid.toSemigroup.{u1} R (CommMonoid.toMonoid.{u1} R _inst_1)) _inst_2)) (f x)))
-but is expected to have type
-  forall {R : Type.{u2}} [_inst_1 : CommMonoid.{u2} R] [_inst_2 : StarSemigroup.{u2} R (Monoid.toSemigroup.{u2} R (CommMonoid.toMonoid.{u2} R _inst_1))] {α : Type.{u1}} (s : Finset.{u1} α) (f : α -> R), Eq.{succ u2} R (Star.star.{u2} R (InvolutiveStar.toStar.{u2} R (StarSemigroup.toInvolutiveStar.{u2} R (Monoid.toSemigroup.{u2} R (CommMonoid.toMonoid.{u2} R _inst_1)) _inst_2)) (Finset.prod.{u2, u1} R α _inst_1 s (fun (x : α) => f x))) (Finset.prod.{u2, u1} R α _inst_1 s (fun (x : α) => Star.star.{u2} R (InvolutiveStar.toStar.{u2} R (StarSemigroup.toInvolutiveStar.{u2} R (Monoid.toSemigroup.{u2} R (CommMonoid.toMonoid.{u2} R _inst_1)) _inst_2)) (f x)))
-Case conversion may be inaccurate. Consider using '#align star_prod star_prodₓ'. -/
 @[simp]
 theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :
     star (∏ x in s, f x) = ∏ x in s, star (f x) :=
   map_prod (starMulAut : R ≃* R) _ _
 #align star_prod star_prod
 
-/- warning: star_sum -> star_sum is a dubious translation:
-lean 3 declaration is
-  forall {R : Type.{u1}} [_inst_1 : AddCommMonoid.{u1} R] [_inst_2 : StarAddMonoid.{u1} R (AddCommMonoid.toAddMonoid.{u1} R _inst_1)] {α : Type.{u2}} (s : Finset.{u2} α) (f : α -> R), Eq.{succ u1} R (Star.star.{u1} R (InvolutiveStar.toHasStar.{u1} R (StarAddMonoid.toHasInvolutiveStar.{u1} R (AddCommMonoid.toAddMonoid.{u1} R _inst_1) _inst_2)) (Finset.sum.{u1, u2} R α _inst_1 s (fun (x : α) => f x))) (Finset.sum.{u1, u2} R α _inst_1 s (fun (x : α) => Star.star.{u1} R (InvolutiveStar.toHasStar.{u1} R (StarAddMonoid.toHasInvolutiveStar.{u1} R (AddCommMonoid.toAddMonoid.{u1} R _inst_1) _inst_2)) (f x)))
-but is expected to have type
-  forall {R : Type.{u2}} [_inst_1 : AddCommMonoid.{u2} R] [_inst_2 : StarAddMonoid.{u2} R (AddCommMonoid.toAddMonoid.{u2} R _inst_1)] {α : Type.{u1}} (s : Finset.{u1} α) (f : α -> R), Eq.{succ u2} R (Star.star.{u2} R (InvolutiveStar.toStar.{u2} R (StarAddMonoid.toInvolutiveStar.{u2} R (AddCommMonoid.toAddMonoid.{u2} R _inst_1) _inst_2)) (Finset.sum.{u2, u1} R α _inst_1 s (fun (x : α) => f x))) (Finset.sum.{u2, u1} R α _inst_1 s (fun (x : α) => Star.star.{u2} R (InvolutiveStar.toStar.{u2} R (StarAddMonoid.toInvolutiveStar.{u2} R (AddCommMonoid.toAddMonoid.{u2} R _inst_1) _inst_2)) (f x)))
-Case conversion may be inaccurate. Consider using '#align star_sum star_sumₓ'. -/
 @[simp]
 theorem star_sum [AddCommMonoid R] [StarAddMonoid R] {α : Type _} (s : Finset α) (f : α → R) :
     star (∑ x in s, f x) = ∑ x in s, star (f x) :=

327c3c0d

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

008205aa

chore: remove deprecated MulEquiv.map_prod, AddEquiv.map_sum (#9078)

e49f0e60

Diff

@@ -25,5 +25,5 @@ theorem star_prod [CommMonoid R] [StarMul R] {α : Type*} (s : Finset α) (f : 
 
 @[simp]
 theorem star_sum [AddCommMonoid R] [StarAddMonoid R] {α : Type*} (s : Finset α) (f : α → R) :
-    star (∑ x in s, f x) = ∑ x in s, star (f x) := (starAddEquiv : R ≃+ R).map_sum _ _
+    star (∑ x in s, f x) = ∑ x in s, star (f x) := map_sum (starAddEquiv : R ≃+ R) _ _
 #align star_sum star_sum

008205aa

refactor(Algebra/Star/*): Allow for star operation on non-associative algebras (#6562)

Typically a * operation on a mathematical structure R equipped with a multiplication is an involutive anti-automorphism i.e.

∀ r s : R, star (r * s) = star s * star r

Currently mathlib defines a class StarSemigroup to be a semigroup satisfying this property. However, the requirement for the multiplication to be associative is unnecessarily restrictive. There are important classes of star-algebra which are not associative (e.g. JB*-algebras).

This PR removes the requirement for a StarSemigroup to be a semigroup, merely requiring it to have a multiplication.

I've changed the name from StarSemigroup to StarMul since it's no longer a semigroup.

Zulip discussion

Previously opened as a mathlib PR https://github.com/leanprover-community/mathlib/pull/17949

Co-authored-by: Christopher Hoskin <mans0954@users.noreply.github.com> Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

85c04e73

Diff

@@ -19,7 +19,7 @@ variable {R : Type*}
 open BigOperators
 
 @[simp]
-theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type*} (s : Finset α) (f : α → R) :
+theorem star_prod [CommMonoid R] [StarMul R] {α : Type*} (s : Finset α) (f : α → R) :
     star (∏ x in s, f x) = ∏ x in s, star (f x) := map_prod (starMulAut : R ≃* R) _ _
 #align star_prod star_prod

008205aa

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

@@ -14,16 +14,16 @@ These results are kept separate from `Algebra.Star.Basic` to avoid it needing to
 -/
 
 
-variable {R : Type _}
+variable {R : Type*}
 
 open BigOperators
 
 @[simp]
-theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :
+theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type*} (s : Finset α) (f : α → R) :
     star (∏ x in s, f x) = ∏ x in s, star (f x) := map_prod (starMulAut : R ≃* R) _ _
 #align star_prod star_prod
 
 @[simp]
-theorem star_sum [AddCommMonoid R] [StarAddMonoid R] {α : Type _} (s : Finset α) (f : α → R) :
+theorem star_sum [AddCommMonoid R] [StarAddMonoid R] {α : Type*} (s : Finset α) (f : α → R) :
     star (∑ x in s, f x) = ∑ x in s, star (f x) := (starAddEquiv : R ≃+ R).map_sum _ _
 #align star_sum star_sum

008205aa

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) 2021 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
-
-! This file was ported from Lean 3 source module algebra.star.big_operators
-! leanprover-community/mathlib commit 008205aa645b3f194c1da47025c5f110c8406eab
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.BigOperators.Basic
 import Mathlib.Algebra.Star.Basic
 
+#align_import algebra.star.big_operators from "leanprover-community/mathlib"@"008205aa645b3f194c1da47025c5f110c8406eab"
+
 /-! # Big-operators lemmas about `star` algebraic operations
 
 These results are kept separate from `Algebra.Star.Basic` to avoid it needing to import `Finset`.

008205aa

chore: scoped BigOperators notation (#1952)

e707fa67

Diff

@@ -19,8 +19,7 @@ These results are kept separate from `Algebra.Star.Basic` to avoid it needing to
 
 variable {R : Type _}
 
--- Porting note: commented out the next line
--- open BigOperators
+open BigOperators
 
 @[simp]
 theorem star_prod [CommMonoid R] [StarSemigroup R] {α : Type _} (s : Finset α) (f : α → R) :

008205aa

feat port: Algebra.Star.BigOperators (#1648)

e6e8f35e

`algebra.star.big_operators` ⟷ `Mathlib.Algebra.Star.BigOperators`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 3 + 229

algebra.star.big_operators ⟷ Mathlib.Algebra.Star.BigOperators

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 3 + 229

`algebra.star.big_operators` ⟷ `Mathlib.Algebra.Star.BigOperators`