Theorem IsGroupHom.preimage

Modification history

2025-01-28 11:07
Mathlib/Deprecated/Subgroup.lean
chore: delete deprecated algebraic structure files (#16836) …
Deleted IsGroupHom.preimageView on Github →
2023-01-27 13:20
Mathlib/Deprecated/Subgroup.lean
feat: port `Deprecated.Subgroup` (#1876)
Added IsGroupHom.preimageView on Github →