Theorem Finset.all_card_le_biUnion_card_iff_exists_injective

Modification history

2023-05-16 06:36
Mathlib/Combinatorics/Hall/Basic.lean
feat: port Combinatorics.Hall.Basic (#3999)
Added Finset.all_card_le_biUnion_card_iff_exists_injectiveView on Github →