2026-09-02 17:15 UTC
I think it’s three, the handle, the donut hole, then there’s the hole/tunnel formed inside of the cup
EDIT: there seems to be some confusion around what i mean, maybe this illustration will clear it up:
Replies (1)
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@jdr@lemmy.ml 2026-09-02 22:16
I’m a topologist, and this is correct. en.wikipedia.org/wiki/3-torus