Mathlib v3 is deprecated. Go to Mathlib v4

Theorem subsemigroup.mem_center_iff

Modification history

2022-05-10 03:35

src/group_theory/subsemigroup/center.lean

feat(group_theory/subsemigroup/{center, centralizer}): define center and centralizer as subsemigroups (#13627) …

Added subsemigroup.mem_center_iff View on Github →