# Definition
Suppose $M$ is a Topological Space. We say $M$ is a Topological Manifold with Manifold Dimension $n$ if
- $M$ is a Hausdorff
- $M$ is a Second Countable
- $M$ is Locally Euclidean of Manifold Dimension $n$
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Suppose $M$ is a Topological Space. We say $M$ is a Topological Manifold with Manifold Dimension $n$ if