Comment on Nihilism spectrum
CrazyLikeGollum@lemmy.world 4 weeks agoThe nostrils are connected to the throat through the sinuses as are the ear canals. Topologically making them all part of the same mouth-anus throughole.
Comment on Nihilism spectrum
CrazyLikeGollum@lemmy.world 4 weeks agoThe nostrils are connected to the throat through the sinuses as are the ear canals. Topologically making them all part of the same mouth-anus throughole.
itslilith@lemmy.blahaj.zone 4 weeks ago
Not true, topolgically the route
left nostril -> sinus -> right nostril
is another hole. So is
any nostril -> sinus -> mouth.
ears have the eardrum, so they don’t count.
For the more formal definitions of topological holes, look up Betti numbers. What we’re currently talking about is the Betti number b_1. For humans, that is at least 3 (but I’m sure I’m missing many more holes). Unless you’re missing the entire septum.