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[Merged by Bors] - feat(CategoryTheory): the yoneda embedding to sheaves preserves disjoint coproducts#34145

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[Merged by Bors] - feat(CategoryTheory): the yoneda embedding to sheaves preserves disjoint coproducts#34145
chrisflav wants to merge 2 commits intoleanprover-community:masterfrom
chrisflav:yoneda-preserves

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@chrisflav chrisflav commented Jan 19, 2026

From Proetale.


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@chrisflav chrisflav added the t-category-theory Category theory label Jan 19, 2026
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github-actions Bot commented Jan 19, 2026

PR summary 7f8939ff7d

Import changes for modified files

Dependency changes

File Base Count Head Count Change
Mathlib.CategoryTheory.Sites.Subcanonical 674 676 +2 (+0.30%)
Mathlib.CategoryTheory.Limits.Shapes.DisjointCoproduct 401 402 +1 (+0.25%)
Import changes for all files
Files Import difference
5 files Mathlib.CategoryTheory.Limits.Shapes.DisjointCoproduct Mathlib.CategoryTheory.Sites.Coherent.SequentialLimit Mathlib.Condensed.Light.AB Mathlib.Condensed.Light.Epi Mathlib.Condensed.Light.InternallyProjective
1
Mathlib.CategoryTheory.Sites.Subcanonical 2

Declarations diff

+ Cofan.isColimitMapCoconeEquiv
+ Fan.isLimitMapConeEquiv
+ isColimitCofanMkYoneda
+ ofCoproductDisjointOfCommSq
+ preservesColimitsOfShape_yoneda_of_ofArrows_inj_mem
+ preservesLimitsOfSize_yoneda
+ toFunctor

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.


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).

Comment thread Mathlib/CategoryTheory/Sites/Subcanonical.lean Outdated
@robin-carlier robin-carlier self-assigned this Jan 22, 2026
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Thanks!

maintainer merge

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🚀 Pull request has been placed on the maintainer queue by robin-carlier.

@ghost ghost added the maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. label Jan 22, 2026
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Thanks 🎉

bors merge

@ghost ghost added ready-to-merge This PR has been sent to bors. and removed maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. labels Jan 30, 2026
mathlib-bors Bot pushed a commit that referenced this pull request Jan 30, 2026
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mathlib-bors Bot commented Jan 30, 2026

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors Bot changed the title feat(CategoryTheory): the yoneda embedding to sheaves preserves disjoint coproducts [Merged by Bors] - feat(CategoryTheory): the yoneda embedding to sheaves preserves disjoint coproducts Jan 30, 2026
@mathlib-bors mathlib-bors Bot closed this Jan 30, 2026
YellPika pushed a commit to YellPika/mathlib4 that referenced this pull request Feb 3, 2026
michaellee94 pushed a commit to michaellee94/mathlib4 that referenced this pull request Feb 15, 2026
Maldooor pushed a commit to Maldooor/mathlib4 that referenced this pull request Feb 25, 2026
pfaffelh pushed a commit to pfaffelh/mathlib4 that referenced this pull request Mar 2, 2026
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4 participants