Today was a crochet day. I finished a pseudosphere I started about two weeks ago. I’ve been amusing myself by calling it a quasi-pseudosphere because I started it with a 20 chain ring rather than starting it correctly without the hole in the middle. It’s a full skein of yarn, crocheted with a G hook with an increase every fourth stitch.

I also started another pseudosphere (properly this time). This one is being done with an I hook and increases every 3rd stitch.

Visit Daina Taimina’s blog to learn more about hyperbolic geometry and crochet.