Theorem IsKleinFour.not_isCyclic

Modification history

2025-01-20 17:23
Mathlib/GroupTheory/SpecificGroups/KleinFour.lean
feat(GroupTheory/SpecificGroups): dihedral groups are not cyclic (with one exception) (#20817)
Modified IsKleinFour.not_isCyclicView on Github →
2023-11-30 19:19
Mathlib/GroupTheory/SpecificGroups/KleinFour.lean
feat: abstract `KleinFour` into a class `IsKleinFour`. (#8565) …
Added IsKleinFour.not_isCyclicView on Github →