Thread

Tweet 1

A great math problem that is just about shapes but unfortunately I don't know how to express in a way a 5 y/o would understand: Are there two subsets of the plane which are not homeomorphic but have homeomorphic extrusions.

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Tweet 2

Roughly: Are there two distinct flat shapes which become the same when fattened?

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Tweet 3

distinct/the same don't really capture (not) homeomorphic.

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