LeftRedditOnJul1@lemmy.world to Wikipedia@lemmy.worldEnglish · 2 days agoHairy Ball Theoremen.m.wikipedia.orgexternal-linkmessage-square10fedilinkarrow-up178arrow-down11
arrow-up177arrow-down1external-linkHairy Ball Theoremen.m.wikipedia.orgLeftRedditOnJul1@lemmy.world to Wikipedia@lemmy.worldEnglish · 2 days agomessage-square10fedilink
minus-square4am@lemm.eelinkfedilinkEnglisharrow-up21·1 day ago A failed attempt to comb a hairy 3-ball (2-sphere), leaving a tuft at each pole