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feat(MeasureTheory/LpSeminorm): add HasCompactSupport.memLp_of_enorm_bound#37559

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feat(MeasureTheory/LpSeminorm): add HasCompactSupport.memLp_of_enorm_bound#37559
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Add HasCompactSupport.memLp_of_enorm_bound: a bounded measurable function with compact support is in L^p. This is the ENNReal-valued version of HasCompactSupport.memLp_of_bound.

Upstreamed from the Carleson project.

Co-authored-by: Floris van Doorn fpvdoorn@gmail.com


…_bound`

Add `HasCompactSupport.memLp_of_enorm_bound`: a bounded measurable function with compact support is in L^p. This is the `ENNReal`-valued version of `HasCompactSupport.memLp_of_bound`.

Upstreamed from the [Carleson](https://github.com/fpvandoorn/carleson) project.

Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
@pitmonticone pitmonticone added carleson part of the ongoing formalization of Carleson's theorem easy < 20s of review time. See the lifecycle page for guidelines. labels Apr 2, 2026
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github-actions bot commented Apr 2, 2026

PR summary f51efbe0b8

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ _root_.HasCompactSupport.memLp_of_enorm_bound

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.


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).

@RemyDegenne RemyDegenne removed their assignment Apr 7, 2026
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Is there a reason this is not next to HasCompactSupport.memLp_of_bound? Otherwise LGTM.

@pitmonticone
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Thank you, Floris. Moved it next to memLp_of_bound.

fpvandoorn pushed a commit to fpvandoorn/carleson that referenced this pull request Apr 7, 2026
Update the upstreaming status comments for files that have been PRed to
mathlib:

- `Analysis/MeanInequalitiesPow`
leanprover-community/mathlib4#37547
- `Order/LiminfLimsup`
leanprover-community/mathlib4#37549 (merged)
- `Topology/Order/Basic`
leanprover-community/mathlib4#37550 (moved to
DenselyOrdered)
- `MeasureTheory/Integral/Average`
leanprover-community/mathlib4#37551
- `MeasureTheory/Measure/ENNReal`
leanprover-community/mathlib4#37552 (generalized
to `measurable_iSup_of_lowerSemicontinuous`)
- `MeasureTheory/Integral/Lebesgue`
leanprover-community/mathlib4#37558 (merged)
- `MeasureTheory/Function/LpSpace/Indicator`
leanprover-community/mathlib4#37559
- `MeasureTheory/Function/LpSpace/ContinuousFunctions`
leanprover-community/mathlib4#37560
- `Data/ENNReal`
leanprover-community/mathlib4#37565 (partial)
- `MeasureTheory/Integral/Bochner/ContinuousLinearMap`
leanprover-community/mathlib4#37568 (partial)
- `Topology/Instances/AddCircle/Defs`
leanprover-community/mathlib4#37570 (partial)
- `Discrete/SumEstimates`
leanprover-community/mathlib4#37597

Also notes that `IntegrableAtFilter.congr` and
`integrableOn_of_integrableOn_inter_support` already exist in mathlib.
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