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I could sit around and watch TV and crochet pseudospheres all day long. Here is my second one:

pseudosphere-1

These are fun: they are intellectual without actually requiring concentration while you do them. This one used the last of the Noro Taiyo yarn I had lying around and the same hook as the last one (here).

I started with one stitch in the middle and crocheted two stitches into every three stitches.

I am now working on a hyperbolic plane.

Famously, when you walk around with a hammer everything looks like a nail — I walk around with a ball of yarn and various implements itching to make it into something else.

I recently came across a book that shows me I am not alone (if all of you reading blogs on the subject are not enough to tell me that already): A Field Guide to Hyperbolic Space by Margaret Wertheim (you can order it here), published by the Institute for Figuring.  Of course, I had to order one immediately.

hyperbolic-1

It’s all about geometry from the perspective of needlecraft — and crochet being one of the best ways to represent hyperbolic space. I have seen several articles about this in various knitting and crochet magazines over the years, but this is the first chance I have had the chance to really get into the theory of the thing.

hyperbolic-2

I have been short of reading material in the last few days, and this will be just the ticket. I haven’t had the immediate opportunity to learn anything about theoretical geometry in years, I think I miss it.

February 2017
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