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[Merged by Bors] - feat: measurable union of a family of measurable sets#34680

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sgouezel wants to merge 2 commits intoleanprover-community:masterfrom
sgouezel:SG_measUnion
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[Merged by Bors] - feat: measurable union of a family of measurable sets#34680
sgouezel wants to merge 2 commits intoleanprover-community:masterfrom
sgouezel:SG_measUnion

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@sgouezel sgouezel commented Feb 1, 2026

Needed for #34055


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github-actions bot commented Feb 1, 2026

PR summary d46874c4dd

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ exists_ae_subset_biUnion_countable
+ exists_ae_subset_biUnion_countable_of_isFiniteMeasure

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).

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Thanks!
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github-actions bot commented Feb 1, 2026

🚀 Pull request has been placed on the maintainer queue by EtienneC30.

@ghost ghost added the maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. label Feb 1, 2026
Co-authored-by: Etienne Marion <66847262+EtienneC30@users.noreply.github.com>
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bors r+

@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 Feb 2, 2026
mathlib-bors bot pushed a commit that referenced this pull request Feb 2, 2026
Needed for #34055

Co-authored-by: sgouezel <sebastien.gouezel@univ-rennes1.fr>
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mathlib-bors bot commented Feb 2, 2026

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat: measurable union of a family of measurable sets [Merged by Bors] - feat: measurable union of a family of measurable sets Feb 2, 2026
@mathlib-bors mathlib-bors bot closed this Feb 2, 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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3 participants