this post was submitted on 09 Jun 2025
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Science Memes

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Baldur's Gayte (mander.xyz)
submitted 1 week ago by [email protected] to c/[email protected]
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[–] [email protected] 2 points 1 week ago* (last edited 1 week ago) (9 children)

a torus is not homotopic to a straw though unless you take the straw and glue it at its ends. a straw is homotopic to a circle, a torus is homotopic to product of two circles, Baldur's gate is homotopic to a disk which is homotopic to a point unless we are talking about the game storage medium which used to be a CD which is also homotopic to a circle

[–] [email protected] 2 points 1 week ago (1 children)

Wouldn’t a straw be the product of a circle and a line?

[–] [email protected] 1 points 1 week ago

What you said is stronger than being homotopic. homotopic is weaker, for instance a line is homotopic to a point, By taking the straw (even if it has thickness) and just shrinking it along its longer axis you eventually arrive at a circle. If it has thickness you will arrive at a band and then you can also retract radially to arrive at a circle.

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