Topological Manifold
- Differential Geometry 1.1

Topological Manifold

from 「Geometrical Methods of Mathematical Physics」: Bernard F. Schutz

Topological manifold

A topological manifold is a second countable Hausdorff space that is locally homeomorphic to Euclidean space.

  • $X$ is second countable Hausdorff space
  • $ \forall x\in X,\; \exist N\in\mathcal{N}_x \;\text{s.t.}$ $N$ and $\R^n$ are homeomorphic

If then, $X$ is an $n$-dimensional topological manifold.

Klein bottle

A klein bottle, which is the example of 2-dimensional topological manifold