Theorem SequentialSpace.isProperMap_iff_isCompact_preimage

Modification history

2024-10-14 12:17
Mathlib/Topology/Maps/Proper/Basic.lean
feat: compactly generated spaces for proper maps and preimages of compact sets / proper and properly discontinuous actions (#15239) …
Deleted SequentialSpace.isProperMap_iff_isCompact_preimageView on Github →
2024-07-22 09:09
Mathlib/Topology/Maps/Proper/Basic.lean
feat: Characterization of proper maps for Hausdorff and compactly generated spaces (#13635) …
Added SequentialSpace.isProperMap_iff_isCompact_preimageView on Github →