Card filter eval subtype eq pi Finset
card_filter_eval_subtype_eq_piFinset
Plain-language statement
The number of elements in ā i, ā„(S i) satisfying eval (āĀ·) f = 0 equals the number of elements in Fintype.piFinset (fun i => (S i).toFinset) satisfying eval Ā· f = 0.
Source project: ArkLib
Person-level attribution pending.