Non-metric spaces {2-manifold} can have two dimensions. Three geometrized 2-manifolds exist, depending on curvature. The simplest compact 2-manifold is a sphere with positive curvature. Torus is a 2-manifold with zero curvature. 2-manifolds can have negative curvature when they have two or more handles.
Mathematical Sciences>Topology>Surface>Manifold
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Date Modified: 2022.0224