[Merged by Bors] - chore(Algebra/Central/End): generalize Algebra.IsCentral.instEnd

[themathqueen]

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This came up during review of #33282.

[github-actions]

PR summary 51192f7a45

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.Algebra.Module.LinearMap.End	276	277	+1 (+0.36%)
Mathlib.Algebra.Central.End	811	812	+1 (+0.12%)

Import changes for all files

Files

Import difference

19 files Mathlib.Algebra.Category.Grp.ZModuleEquivalence Mathlib.Algebra.Category.ModuleCat.Basic Mathlib.Algebra.Category.ModuleCat.Colimits Mathlib.Algebra.Category.ModuleCat.FilteredColimits Mathlib.Algebra.Category.ModuleCat.Semi Mathlib.Algebra.Central.End Mathlib.Algebra.Module.Equiv.Basic Mathlib.Algebra.Module.LinearMap.End Mathlib.Algebra.Order.Module.Equiv Mathlib.CategoryTheory.Abelian.GrothendieckCategory.Coseparator Mathlib.CategoryTheory.Adjunction.Additive Mathlib.CategoryTheory.Generator.Abelian Mathlib.CategoryTheory.Generator.Preadditive Mathlib.CategoryTheory.Limits.ConcreteCategory.WithAlgebraicStructures Mathlib.CategoryTheory.Linear.Yoneda Mathlib.CategoryTheory.Preadditive.Yoneda.Basic Mathlib.LinearAlgebra.Finsupp.Defs Mathlib.LinearAlgebra.GeneralLinearGroup.Basic Mathlib.LinearAlgebra.GeneralLinearGroup

1

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Declarations diff

+ mem_center_iff
+ mem_submonoidCenter_iff
+ mem_subsemigroupCenter_iff
+ smulLeft
+ smulLeft_eq

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[ocfnash]

Thanks!

bors d+

[mathlib-bors]

✌️ themathqueen can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

[themathqueen]

@ocfnash, there's a AddMonoidHom.smulLeft function, so I thought maybe we should extend that. But this comes with an additional 8 file import (3% increase).

Revert?

[ocfnash]

@ocfnash, there's a AddMonoidHom.smulLeft function, so I thought maybe we should extend that. But this comes with an additional 8 file import (3% increase).

Revert?

Oh yeah, I think not worth the 3% hit just to extend something trivial. No harm leaving some breadcrumbs between the two in the form of doc string comments if you like.

[themathqueen]

bors r+

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded!

And happy new year! 🎉

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