This week, I’ve been reading about the hyperbolic plane. I became curious about this peculiar concept in mathematics after reading a short parody of Alice’s Adventures in Wonderland, in which the Mad Hatter’s tea party took place at a hyperbolic table. 382 more words

This post from the estimable "Gowers's Weblog" passed me by when it was originally published in 2012, but I saw the link on Twitter and decided to repost it here because it's still topical..