this post was submitted on 09 Jun 2025
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[โ€“] iAvicenna@lemmy.world 3 points 1 week ago (1 children)

If solid torus yes, if just the regular torus (surface of the solid torus) no. CD is homotopic to a circle and so is a solid torus.

[โ€“] Semjaza@lemmynsfw.com 2 points 1 week ago

OK, that's my ignorance. I didn't realise toruses were usually hollow.

Thank you for letting me know, you're right and I've learnt something.