Theorem PartialHomeomorph.isOpen_extend_preimage'

Modification history

2025-02-04 15:13
Mathlib/Geometry/Manifold/IsManifold/Basic.lean
chore(Geometry/Manifold/IsManifold): split out material on extended charts (#21219) …
Modified PartialHomeomorph.isOpen_extend_preimage'View on Github →
2023-12-11 20:54
Mathlib/Geometry/Manifold/SmoothManifoldWithCorners.lean
chore: rename LocalHomeomorph to PartialHomeomorph (#8982) …
Added PartialHomeomorph.isOpen_extend_preimage'View on Github →