• iAvicenna@lemmy.world
    link
    fedilink
    English
    arrow-up
    3
    ·
    8 days ago

    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.

    • Semjaza@lemmynsfw.com
      link
      fedilink
      English
      arrow-up
      1
      ·
      8 days 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.