I've been watching http://www.youtube.com/watch?v=Pm5ROyoaMZA" on youtube where it was shown that a cone has curved space (from about 1:05:00). Using the same method of parallel transportation it seems to me that every 3d shape, other than a plane has some points of curvature. However the same lecture states that a cylinder can be easily flattened and has no curvature. Am I dong something wrong, or did they ignore the top/bottom of the cylinder?(adsbygoogle = window.adsbygoogle || []).push({});

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# Curved space

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