feat(MeasureTheory/Integral): add integrableOn_of_integrableOn_inter_support

[pitmonticone]

If a function is integrable on s ∩ support f, then it is integrable on s.

Upstreamed from the Carleson project.

Co-authored-by: Jasper Mulder-Sohn jasper.mulder@planet.nl

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[github-actions]

PR summary 6ef8cc2731

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

+ integrableOn_of_integrableOn_inter_support

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/reporting/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).

[ADedecker]

Isn't this MeasureTheory.IntegrableOn.of_inter_support ?

[grunweg]

I think so (and the existing proof is also slightly nicer than this one). I suggest moving Carleson to this lemma instead.

[pitmonticone]

Closing: this already exists as MeasureTheory.IntegrableOn.of_inter_support. Thanks @ADedecker and @grunweg for pointing this out!