In topology, a surface is a two-dimensional topological space that can be defined informally as a "shape" that locally resembles the Euclidean plane. More specifically, a surface is a manifold that is two-dimensional, meaning that every point on the surface has a neighborhood that is homeomorphic (topologically equivalent) to an open subset of \(\mathbb{R}^2\). ### Key Features of Surfaces: 1. **Local vs.
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