Theorem eq_one_iff_eq_one_of_mul_eq_one

Modification history

2022-10-14 00:13
Mathlib/Algebra/Group/Basic.lean
feat: replace Algebra/Group/{Defs,Basic} with direct ports from mathlib3 (#457) …
Added eq_one_iff_eq_one_of_mul_eq_oneView on Github →