Theorem MonoidHom.isOpenQuotientMap_of_isQuotientMap

Modification history

2026-08-24 07:44
Mathlib/Topology/Algebra/Group/Basic.lean
refactor(Topology/Algebra/Group): split long file Basic.lean (#43010) …
Modified MonoidHom.isOpenQuotientMap_of_isQuotientMapView on Github →
2024-12-13 19:24
Mathlib/Topology/Algebra/Group/Basic.lean
feat(Topology/Algebra/Group/Basic): a quotient map between topological groups is open (#19657) …
Added MonoidHom.isOpenQuotientMap_of_isQuotientMapView on Github →