Skip to content

[Merged by Bors] - feat(CategoryTheory/Abelian): mono are stable under transfinite composition#22060

Closed
joelriou wants to merge 3 commits intomasterfrom
grothendieck-abelian-monomorphisms-transfinite-composition
Closed

[Merged by Bors] - feat(CategoryTheory/Abelian): mono are stable under transfinite composition#22060
joelriou wants to merge 3 commits intomasterfrom
grothendieck-abelian-monomorphisms-transfinite-composition

Conversation

@joelriou
Copy link
Copy Markdown
Contributor

In a Grothendieck abelian category, monomorphisms are stable under transfinite composition.


Open in Gitpod

@joelriou joelriou added the t-category-theory Category theory label Feb 18, 2025
@github-actions
Copy link
Copy Markdown

github-actions bot commented Feb 18, 2025

PR summary 77545d9a9b

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference
Mathlib.CategoryTheory.Abelian.GrothendieckCategory.Monomorphisms (new file) 1029

Declarations diff

+ instance : IsStableUnderTransfiniteComposition.{w} (monomorphisms C)
+ map_bot_le
+ mono

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).

Copy link
Copy Markdown
Member

@TwoFX TwoFX left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Thanks!
bors r+

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Feb 19, 2025
mathlib-bors bot pushed a commit that referenced this pull request Feb 19, 2025
…sition (#22060)

In a Grothendieck abelian category, monomorphisms are stable under transfinite composition.
@mathlib-bors
Copy link
Copy Markdown
Contributor

mathlib-bors bot commented Feb 19, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(CategoryTheory/Abelian): mono are stable under transfinite composition [Merged by Bors] - feat(CategoryTheory/Abelian): mono are stable under transfinite composition Feb 19, 2025
@mathlib-bors mathlib-bors bot closed this Feb 19, 2025
@mathlib-bors mathlib-bors bot deleted the grothendieck-abelian-monomorphisms-transfinite-composition branch February 19, 2025 06:12
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

ready-to-merge This PR has been sent to bors. t-category-theory Category theory

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants