Theorem Finset.HasAntidiagonal.filter_fst_eq_antidiagonal

Modification history

2026-06-25 19:06
Mathlib/Algebra/Order/Antidiag/Prod.lean
feat(Algebra/Order/Antidiag/Prod): add HasMulAntidiagonal (#38623) …
Added Finset.HasAntidiagonal.filter_fst_eq_antidiagonalView on Github →