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Trying to fix the R sigma-algebra issue#1986

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affeldt-aist merged 4 commits into
math-comp:masterfrom
affeldt-aist:R_sigma_algebra_20260605
Jun 16, 2026
Merged

Trying to fix the R sigma-algebra issue#1986
affeldt-aist merged 4 commits into
math-comp:masterfrom
affeldt-aist:R_sigma_algebra_20260605

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@affeldt-aist

@affeldt-aist affeldt-aist commented Jun 5, 2026

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Motivation for this change

@CohenCyril

Checklist
  • added corresponding entries in CHANGELOG_UNRELEASED.md
  • added corresponding documentation in the headers

Reference: How to document

Merge policy

As a rule of thumb:

  • PRs with several commits that make sense individually and that
    all compile are preferentially merged into master.
  • PRs with disorganized commits are very likely to be squash-rebased.
Reminder to reviewers

@affeldt-aist affeldt-aist marked this pull request as ready for review June 8, 2026 08:09
@affeldt-aist affeldt-aist force-pushed the R_sigma_algebra_20260605 branch from 3fe91de to 0df482a Compare June 9, 2026 06:47
@affeldt-aist affeldt-aist force-pushed the R_sigma_algebra_20260605 branch from 0df482a to b37d376 Compare June 15, 2026 01:05
@affeldt-aist

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To summarize the situation, this PR is attaching to R : realType the measurableType of the sigma-algebra generated by open-closed intervals with a new display (lebesgue_display) and using Measurable.on/Measurable.copy, instead building a new instance with the default display.

@affeldt-aist

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This moreover fixes the problem reported by @Yosuke-Ito-345 : #math-comp analysis > Fail of `integral_set1` @ 💬

So let's merge!

@affeldt-aist affeldt-aist merged commit b185302 into math-comp:master Jun 16, 2026
44 of 45 checks passed
Brixfoly pushed a commit to Brixfoly/analysis that referenced this pull request Jun 22, 2026
* Keeping definitionally identical display on R

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Co-authored-by: Cyril Cohen <cyril.cohen@inria.fr>
Brixfoly pushed a commit to Brixfoly/analysis that referenced this pull request Jul 6, 2026
* Keeping definitionally identical display on R

---------

Co-authored-by: Cyril Cohen <cyril.cohen@inria.fr>
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2 participants