Jisho

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Noun
1. curved surface
Wikipedia definition
2. SurfaceIn mathematics, specifically in topology, a surface is a two-dimensional topological manifold. The most familiar examples are those that arise as the boundaries of solid objects in ordinary three-dimensional Euclidean space R — for example, the surface of a ball. On the other hand, there are surfaces, such as the Klein bottle, that cannot be embedded in three-dimensional Euclidean space without introducing singularities or self-intersections.
Read “Surface” on English Wikipedia
Read “曲面” on Japanese Wikipedia
Read “Surface” on DBpedia

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