I wonder if curvature necessarily means space has been removed. The typical example is forming a "curved" surface by cutting out a triangle from a flat surface, and then gluing the remaining side back together. This forms of a cone which is a type of curved surface. What is the generalization of this? Does this mean that curvature can only be formed by cutting out sections of a flat space? Thanks.(adsbygoogle = window.adsbygoogle || []).push({});

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# Curvature from holes in space?

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