There are manifolds that are flat and compact (i.e., not "infinite"). For exampl... | Hacker News

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giomasce on July 19, 2022 | parent | context | favorite | on: Do Infinite Pencils Exist?

There are manifolds that are flat and compact (i.e., not "infinite"). For example, flat tori.

danbruc on July 19, 2022 [–]

Good point. How did I never realize that?

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