Mathlib v3 is deprecated. Go to Mathlib v4

Theorem mul_opposite.op_rat_cast

Modification history

2023-03-17 19:18
src/algebra/field/opposite.lean
feat(algebra/*/opposite): Missing instances (#18602) …
Modified mul_opposite.op_rat_castView on Github →
2022-03-03 21:31
src/data/rat/cast.lean
feat(data/{nat,int,rat}/cast, algebra/star/basic): lemmas about `star` on casts (#12418) …
Added mul_opposite.op_rat_castView on Github →