On: Computer scientists discover limits of gradient de...

[jjtheblunt]

i remember the example of "you can't comb the hair on a coconut without a whorl".

[hgsgm → jjtheblunt]

That's a different fixed point theorem.

https://en.m.wikipedia.org/wiki/Brouwer_fixed-point_theorem

[jjtheblunt → hgsgm]

Thanks