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[Merged by Bors] - feat(CategoryTheory): if J is κ-filtered, so is Under j#21984

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[Merged by Bors] - feat(CategoryTheory): if J is κ-filtered, so is Under j#21984
joelriou wants to merge 2 commits intomasterfrom
iscardinalfiltered-under

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@joelriou joelriou commented Feb 17, 2025 •
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If κ is a regular cardinal and J is a κ-filtered category, then so is Under j for any j : J.

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@joelriou joelriou added the t-category-theory Category theory label Feb 17, 2025
@joelriou joelriou mentioned this pull request Feb 17, 2025
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github-actions bot commented Feb 17, 2025 •
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PR summary 7af3edb357

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ isCardinalFiltered_under

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).

TwoFX
TwoFX approved these changes Feb 17, 2025
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Thanks!
bors d+

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mathlib-bors bot commented Feb 17, 2025

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

@ghost ghost added the delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). label Feb 17, 2025
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Update Mathlib/CategoryTheory/Presentable/IsCardinalFiltered.lean
7af3edb 
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
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joelriou commented Feb 17, 2025

Thanks!

bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Feb 17, 2025
mathlib-bors bot pushed a commit that referenced this pull request Feb 17, 2025
@joelriou
feat(CategoryTheory): if J is κ-filtered, so is Under j (#21984)
8a202d0 
If `κ` is a regular cardinal and `J` is a `κ`-filtered category, then so is `Under j` for any `j : J`.



Co-authored-by: Joël Riou <37772949+joelriou@users.noreply.github.com>
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mathlib-bors bot commented Feb 17, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(CategoryTheory): if J is κ-filtered, so is Under j [Merged by Bors] - feat(CategoryTheory): if J is κ-filtered, so is Under j Feb 17, 2025
@mathlib-bors mathlib-bors bot closed this Feb 17, 2025
@mathlib-bors mathlib-bors bot deleted the iscardinalfiltered-under branch February 17, 2025 12:13
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delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). ready-to-merge This PR has been sent to bors. t-category-theory Category theory

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