Theorem extChartAt_target_mem_nhds'

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 extChartAt_target_mem_nhds'View on Github →

2024-02-22 00:33

Mathlib/Geometry/Manifold/SmoothManifoldWithCorners.lean

feat: Lemmas about `(extChartAt I x).target` being open if we're boundaryless (#10840) …

Added extChartAt_target_mem_nhds'View on Github →