Theorem ProfiniteGrp.exist_openNormalSubgroup_sub_open_nhds_of_one

Modification history

2026-02-15 18:15
Mathlib/Topology/Algebra/ClopenNhdofOne.lean
feat: closed subgroup of profinite group is intersection of open subgroups containing it (#34785)
Modified ProfiniteGrp.exist_openNormalSubgroup_sub_open_nhds_of_oneView on Github →
2025-05-22 19:35
Mathlib/Topology/Algebra/ClopenNhdofOne.lean
chore: replace nhd with nhds (#25108)
Added ProfiniteGrp.exist_openNormalSubgroup_sub_open_nhds_of_oneView on Github →