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v4
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Theorem
Finset.card_biUnion
Modification history
2025-03-12 13:47
Mathlib/Algebra/BigOperators/Group/Finset/Basic.lean
feat: density of a union of finsets (#22629) …
Modified
Finset.card_biUnion
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2023-05-14 07:05
Mathlib/Algebra/BigOperators/Basic.lean
chore: Rename to `sSup`/`iSup` (#3938) …
Added
Finset.card_biUnion
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