Theorem pos_and_pos_or_neg_and_neg_of_mul_pos
Modification history
2022-09-14 18:51
src/algebra/order/monoid_lemmas_zero_lt.lean
refactor(algebra/order/monoid_lemma_zero_lt): Use `{x : α // 0 ≤ α}` (#16447) …
Added pos_and_pos_or_neg_and_neg_of_mul_posView on Github →2022-08-24 21:27
src/algebra/order/ring.lean
refactor(algebra/order/{monoid_lemmas_zero_lt + ring} + crumbs) remove duplicate lemmas (#16189) …
Deleted pos_and_pos_or_neg_and_neg_of_mul_posView on Github →2020-05-26 13:30
src/algebra/ordered_ring.lean
chore(src/algebra/ordered_ring.lean): fix linting errors (#2827) …
Modified pos_and_pos_or_neg_and_neg_of_mul_posView on Github →