Theorem IsOpenMap.coborder_preimage_subset

Modification history

2024-07-24 08:31

Mathlib/Topology/LocallyClosed.lean

chore(Topology/LocallyClosed): use `X`/`Y` instead of `α`/`β` (#15084)

Modified IsOpenMap.coborder_preimage_subset View on Github →

2024-07-14 15:55

Mathlib/Topology/LocallyClosed.lean

feat(Topology/LocallyClosed): Define locally closed sets (#14396)

Added IsOpenMap.coborder_preimage_subset View on Github →