Theorem Equiv.optionCongr_sign

Modification history

2023-08-10 19:52
Mathlib/GroupTheory/Perm/Option.lean
chore: banish `Type _` and `Sort _` (#6499) …
Modified Equiv.optionCongr_signView on Github →
2023-02-27 16:19
Mathlib/GroupTheory/Perm/Option.lean
feat: port GroupTheory.Perm.Option (#2523)
Added Equiv.optionCongr_signView on Github →