Mathlib Changelog
v4
Changelog
About
Github
Theorem
TopologicalSpace.Opens.isBasis_iff_cover
Modification history
2023-02-11 07:51
Mathlib/Topology/Sets/Opens.lean
feat: port Topology.Sets.Opens (#2118)
Added
TopologicalSpace.Opens.isBasis_iff_cover
View on Github →