So, at last, the paperback version of Category Theory I is available. Sound the trumpets!
Just put the title or the ISBN 1916906370 in the search field of your local Amazon store. And yes, at least for the moment, this is only available as a print-on-demand book from Amazon. But that keeps the price as low as possible — about three coffees. So treat yourself!
The Amazon KDP system makes later editorial revisions particularly easy and cost-free for me, another plus. As I’ve said before, I’m still thinking of this first paperback version as a revisable beta version: it’s there for those — like me — who prefer to work with printed copy once a text gets past a certain length. All comments, corrections, and suggestions for improvement are still most welcome. The PDF of course continues to be freely downloadable: the short Preface and Introduction to that PDF will tell you about the book project, in the most unlikely event that you are reading this but don’t know about it!