Theorem Subgroup.isOpen_of_mem_nhds

Modification history

2026-03-13 18:00
Mathlib/Topology/Algebra/OpenSubgroup.lean
feat: generalize some `ContinuousMul` hypotheses to `SeparatelyContinuousMul` (#36562) …
Modified Subgroup.isOpen_of_mem_nhdsView on Github →
2024-07-28 23:33
Mathlib/Topology/Algebra/OpenSubgroup.lean
chore: robustifying for debug.byAsSorry (part 13) (#15197)
Modified Subgroup.isOpen_of_mem_nhdsView on Github →
2023-03-17 12:26
Mathlib/Topology/Algebra/OpenSubgroup.lean
feat: port Topology.Algebra.OpenSubgroup (#2889)
Added Subgroup.isOpen_of_mem_nhdsView on Github →