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TIL the Hairy Ball theorem (wikipedia.org)

submitted 2 days ago* (last edited 2 days ago) by vatlark@lemmy.world to c/til@lemmy.ca

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The theorem has been expressed colloquially as "you can't comb a hairy ball flat without creating a cowlick" or "you can't comb the hair on a coconut".

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[-] stevedice@sh.itjust.works 1 points 21 hours ago

hairy ones

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this post was submitted on 19 Apr 2025

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