Category Theory in Context

51rmanvawtl-_sx331_bo1204203200_ Congratulations to sometime Cambridge student Emily Riehl, now at Johns Hopkins. Her very illuminating lecture notes, aimed at beginners in category theory (albeit mathematically perhaps rather sophisticated beginners) have become a book, Category Theory in Context, published in a new series of ‘Modern Math Originals’ by Dover Books. This is available now in the US, and at the end of the year in the UK.

There has been a link to Emily Riehl’s evolving notes on the category theory page here for a couple of years, and the publishers have kindly allowed her to continue to host a free PDF copy of the book. So you can take a look already if you don’t know her work — but at this low price, it will be really nice to have a paper copy (and of course, tell your library).

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