Theorem Finset.card_filter

Modification history

2024-10-22 12:48
Mathlib/Algebra/BigOperators/Group/Finset.lean
chore(Algebra): use newly introduced finset notation (#18053) …
Modified Finset.card_filterView on Github →
2023-11-08 22:44
Mathlib/Algebra/BigOperators/Basic.lean
feat: `attach` and `filter` lemmas (#1470) …
Added Finset.card_filterView on Github →