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[Merged by Bors] - feat (MeasureTheory/Function): trivial cases of integrability / summability#13872

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loefflerd wants to merge 4 commits intomasterfrom
DL_measurable_discrete
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[Merged by Bors] - feat (MeasureTheory/Function): trivial cases of integrability / summability#13872
loefflerd wants to merge 4 commits intomasterfrom
DL_measurable_discrete

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@loefflerd
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Any function on a finite type is multipliable / summable; a function on a discrete measurable space is integrable iff its norm is summable.


Excised from #13353
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github-actions bot commented Jun 16, 2024

PR summary 87f21ff3bc

Import changes

No significant changes to the import graph


Declarations diff

+ Multipliable.of_finite
+ hasFiniteIntegral_count_iff
+ integrable_count_iff

You can run this locally as follows
## summary with just the declaration names:
./scripts/no_lost_declarations.sh short <optional_commit>

## more verbose report:
./scripts/no_lost_declarations.sh <optional_commit>

@loefflerd
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(just realised my PR was accidentally reverting a change someone else had made to this file in the last few days. Now fixed.)

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@YaelDillies YaelDillies left a comment

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Thanks!

maintainer merge

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

@github-actions github-actions bot added the maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. label Jun 16, 2024
loefflerd added a commit that referenced this pull request Jun 16, 2024
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bors r+

@github-actions github-actions bot added ready-to-merge This PR has been sent to bors. and removed awaiting-review labels Jun 16, 2024
mathlib-bors bot pushed a commit that referenced this pull request Jun 16, 2024
…bility (#13872)

Any function on a finite type is multipliable / summable; a function on a discrete measurable space is integrable iff its norm is summable.
Comment on lines +963 to +964
letI : MeasurableSpace β := borel β
haveI : BorelSpace β := ⟨rfl⟩
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I don't think the "I" does make a difference here.

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mathlib-bors bot commented Jun 16, 2024

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat (MeasureTheory/Function): trivial cases of integrability / summability [Merged by Bors] - feat (MeasureTheory/Function): trivial cases of integrability / summability Jun 16, 2024
@mathlib-bors mathlib-bors bot closed this Jun 16, 2024
@mathlib-bors mathlib-bors bot deleted the DL_measurable_discrete branch June 16, 2024 12:33
AntoineChambert-Loir pushed a commit that referenced this pull request Jun 20, 2024
…bility (#13872)

Any function on a finite type is multipliable / summable; a function on a discrete measurable space is integrable iff its norm is summable.
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4 participants