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Theorem with_one.ne_one_iff_exists

Modification history

2020-09-27 05:22
src/algebra/group/with_one.lean
chore(data/option): swap sides in `ne_none_iff_exists` (#4285) …
Modified with_one.ne_one_iff_existsView on Github →
2019-07-19 14:39
src/algebra/group/with_one.lean
refactor(algebra/*): delete `free_monoid` from `algebra/free`, restore some functions in `algebra/group/with_one` (#1227) …
Modified with_one.ne_one_iff_existsView on Github →
2019-06-11 17:46
src/algebra/group.lean
refactor(algebra/group): split into smaller files (#1121) …
Modified with_one.ne_one_iff_existsView on Github →
2019-02-28 17:20
src/algebra/group.lean
refactor(algebra/group): generalise and extend the API for with_zero (#762) …
Added with_one.ne_one_iff_existsView on Github →