Theorem IsGaloisGroup.mulEquivCongr_mapSubgroup_fixingSubgroup

Modification history

2026-06-22 16:56
Mathlib/FieldTheory/Galois/IsGaloisGroup.lean
feat(IsGaloisGroup): add `restrictHom` (#38864) …
Added IsGaloisGroup.mulEquivCongr_mapSubgroup_fixingSubgroupView on Github →