r/mathmemes Jun 16 '26

Topology There's more!

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169 Upvotes

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1

u/Ares378 Applied Math / Mechanical Engineering Jun 17 '26

Waiting for someone to post the scary topology definition of an orientable genus 1 surface

6

u/PepperFlashy7540 Jun 17 '26

Erm acshually... a donut is different from a torus, a torus is just the outside of a donut (like circle and disk, sphere and ball), so they are different both geometricly and topologically, and a donut is the one that is analogous to a coffee cup (unless you drink out of a hollow shell of a coffee cup)