Theorem IsCyclic.index_powMonoidHom_ker

Modification history

2025-05-06 06:29
Mathlib/GroupTheory/SpecificGroups/Cyclic.lean
feat(GroupTheory/Cyclic): formula for the card & index of kernel & range of powMonoidHom on a cyclic group (#23461) …
Added IsCyclic.index_powMonoidHom_kerView on Github →