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Show the Lebesgue algebra contains the Jordan algebra - #699

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Chessing234:feat/lebesgue-ge-jordan
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Show the Lebesgue algebra contains the Jordan algebra#699
Chessing234 wants to merge 1 commit into
teorth:mainfrom
Chessing234:feat/lebesgue-ge-jordan

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@Chessing234

@Chessing234 Chessing234 commented Sep 7, 2026

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Summary

  • Jordan measurable sets are Lebesgue measurable; the complement disjunct uses complement-closure of Lebesgue measurability.

Test plan

  • lake build Analysis.MeasureTheory.Section_1_4_1; CI covers the module.

Jordan measurable sets are Lebesgue measurable, and the complement of a Jordan set is handled by complement-closure of Lebesgue measurability.
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