Theorem List.mem_of_formPerm_ne_self

Modification history

2025-10-07 10:51
Mathlib/GroupTheory/Perm/List.lean
chore(GroupTheory/Perm): deprecate `mem_of_formPerm_ne_self` and `formPerm_eq_self_of_notMem` (#28441)
Deleted List.mem_of_formPerm_ne_selfView on Github →
2023-05-07 05:02
Mathlib/GroupTheory/Perm/List.lean
chore: bye-bye, solo `by`s! (#3825) …
Modified List.mem_of_formPerm_ne_selfView on Github →
2023-01-27 14:02
Mathlib/GroupTheory/Perm/List.lean
feat: port GroupTheory.Perm.List (#1631)
Added List.mem_of_formPerm_ne_selfView on Github →