A n‐torus can be defined as an n‐dimensional rectangle with the opposite sides identified. A 1-torus is a circle, a 2-torus is the usual “doughnut”. By this definition the torus is intrinsically flat since it starts with a patch of R^n and simply adds nontrivial identifications.pic.twitter.com/Ye26yo62I8
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Indeed: Source -> https://en.wikipedia.org/wiki/Torus
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