Mathlib Changelog
v4
Changelog
About
Github
Theorem
TopologicalSpace.isOpen_of_mem_countableBasis
Modification history
2023-02-01 00:30
Mathlib/Topology/Bases.lean
feat: port Topology.Bases (#1910)
Added
TopologicalSpace.isOpen_of_mem_countableBasis
View on Github →