176

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

47 comments fedilink hide all child comments

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".

you are viewing a single comment's thread
view the rest of the comments

[-] vatlark@lemmy.world 3 points 2 days ago

Thanks, I expected it would figure itself out. But I guess it only works in the desktop -> mobile direction, not the reverse.

[-] vaguerant@fedia.io 1 points 2 days ago

Totally, I don't understand why it doesn't work that way.

this post was submitted on 19 Apr 2025

176 points (98.9% liked)

Today I Learned (TIL)

7306 readers

12 users here now

You learn something new every day; what did you learn today?

/c/til is a community for any true knowledge that you would like to share, regardless of topic or of source.

Share your knowledge and experience!

Rules

Information must be true
Follow site rules
No, you don't have to have literally learned the fact today
Posts must be about something you learned

founded 2 years ago

MODERATORS

Kokomheart@lemmy.ca

JCSpark@lemmy.ca