Theorem Topology.CWComplex.Subcomplex.union_closedCell

Modification history

2025-09-17 11:12
Mathlib/Topology/CWComplex/Classical/Subcomplex.lean
feat: a subcomplex of a classical CW complex is a CW complex (#29177) …
Added Topology.CWComplex.Subcomplex.union_closedCellView on Github →