LeftRedditOnJul1@lemmy.world to Wikipedia@lemmy.worldEnglish · 4 days agoHairy Ball Theoremen.m.wikipedia.orgexternal-linkmessage-square10fedilinkarrow-up179arrow-down11
arrow-up178arrow-down1external-linkHairy Ball Theoremen.m.wikipedia.orgLeftRedditOnJul1@lemmy.world to Wikipedia@lemmy.worldEnglish · 4 days agomessage-square10fedilink
minus-square4am@lemm.eelinkfedilinkEnglisharrow-up23·4 days ago A failed attempt to comb a hairy 3-ball (2-sphere), leaving a tuft at each pole