For the crafty mathematicians on my friends list

[velvetpage]

The Klein bottle hat.

Comments

[althea_valara]

I <3 Wooly Thoughts. Also, I still need to crochet some hyperbolic planes.

[asqmh.livejournal.com]

I'm a dork. They spell it "Woolly," so it's http://www.woollythoughts.com not the link I wrote out. Anyway, check them out if you're so inclined.