Mathlib v3 is deprecated. Go to Mathlib v4

Theorem even_iff_exists_two_mul

Modification history

2022-04-06 12:59
src/algebra/parity.lean
feat(algebra/parity): introduce `is_square` and, via `to_additive`, also `even` (#13037) …
Added even_iff_exists_two_mulView on Github →