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[Merged by Bors] - feat(SetTheory): more API for HasCardinalLT#30633

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[Merged by Bors] - feat(SetTheory): more API for HasCardinalLT#30633
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@joelriou joelriou commented Oct 17, 2025

We add stability lemmas for HasCardinalLT X κ for sigma types, binary products, etc when κ is regular (or at least infinite).

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@joelriou joelriou added the t-set-theory Set theory label Oct 17, 2025
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github-actions bot commented Oct 17, 2025 •
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PR summary ae97c1b775

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ IsRegular.lift
+ hasCardinalLT_iUnion
+ hasCardinalLT_lift_iff
+ hasCardinalLT_of_finite
+ hasCardinalLT_prod
+ hasCardinalLT_prod'
+ hasCardinalLT_sigma
+ hasCardinalLT_sigma'
+ hasCardinalLT_subtype_iSup
+ hasCardinalLT_subtype_max
+ hasCardinalLT_ulift_iff
+ hasCardinalLT_union
+ isRegular_lift_iff

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).

@joelriou joelriou mentioned this pull request Oct 17, 2025
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@joelriou joelriou mentioned this pull request Oct 28, 2025
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@kim-em
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kim-em commented Oct 29, 2025

bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Oct 29, 2025
mathlib-bors bot pushed a commit that referenced this pull request Oct 29, 2025
@joelriou
feat(SetTheory): more API for HasCardinalLT (#30633)
7c26ba6 
We add stability lemmas for `HasCardinalLT X κ` for sigma types, binary products, etc when `κ` is regular (or at least infinite).
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mathlib-bors bot commented Oct 29, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(SetTheory): more API for HasCardinalLT [Merged by Bors] - feat(SetTheory): more API for HasCardinalLT Oct 29, 2025
@mathlib-bors mathlib-bors bot closed this Oct 29, 2025
BeibeiX0 pushed a commit to BeibeiX0/mathlib4 that referenced this pull request Nov 7, 2025
@joelriou @BeibeiX0
feat(SetTheory): more API for HasCardinalLT (leanprover-community#30633)
9b00795 
We add stability lemmas for `HasCardinalLT X κ` for sigma types, binary products, etc when `κ` is regular (or at least infinite).
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@joelriou @kim-em