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So Gaussian curvature reuses the words "convex" and "concave" to mean things entirely different from the everyday/lens usage?
by jimbo1qaz 7y ago
So Gaussian curvature reuses the words "convex" and "concave" to mean things entirely different from the everyday/lens usage?
- pdonis 7y ago> So Gaussian curvature reuses the words "convex" and "concave" to mean things entirely different from the everyday/lens usage? The everyday/lens usage is talking about how the surface is embedded in a higher dimensional space. Gaussian curvature is not. So you should not expect the meanings in the two cases to be the same.