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Please discuss. (lemmy.ml)

submitted 9 months ago by [email protected] to c/[email protected]

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[–] Shard 12 points 9 months ago (1 children)

Technical definition is a 3-Torus sandwich, defined as any sandwich that is homeomorphic to the Cartesian product of three circles.

[–] [email protected] 1 points 9 months ago* (last edited 9 months ago)

Isn't it S_1 x S_1 x [0, 1] here though?