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Fill the additive commutative monoid instance for countably additive measures - #709

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teorth:mainfrom
Chessing234:feat/cam-add-comm-monoid
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Fill the additive commutative monoid instance for countably additive measures#709
Chessing234 wants to merge 1 commit into
teorth:mainfrom
Chessing234:feat/cam-add-comm-monoid

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@Chessing234

@Chessing234 Chessing234 commented Sep 7, 2026

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Summary

  • Addition of countably additive measures is pointwise on EReal-valued set functions, so the monoid laws follow from those of EReal.

Test plan

  • lake build Analysis.MeasureTheory.Section_1_4_3; CI covers the module.

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