Since Christmas I’ve read two books by Eugenia Cheng and have hugely enjoyed them both. Cheng is a mathematician, author, concert pianist and writer (and, it would appear, all-round awesome human). The first book was called “How to Bake Pi“, and combined a general introduction to category theory with a bunch of cookery tips and recipes. It was a lot more entertaining than that one-sentence description implies, honest. Upon finishing it I immediately ordered a copy for my brother-in-law, who also likes maths a lot (and cake, but who doesn’t). x+y is billed as “A mathematician’s manifesto for rethinking gender”. I have read a lotRead More →