The book ** Programs as diagrams: ** From categorical computability to computable categories A couple of you who accepted the offer asked that I announce when the
[[JSPL: The following email was sent to the old mailing list by duskgoo@gmail.com<mailto:duskgoo@gmail.com> while it was offline]] Dear category theorists, A couple of months ago I offered PDFs of physical version becomes available. So here it is: https://www.amazon.com/Programs-Diagrams-Categorical-Computability-Applicat=<https://www.amazon.com/Programs-Diagrams-Categorical-Computability-Applicat=> ions-ebook/dp/B0C54RZJ4G/ or https://link.springer.com/book/10.1007/978-3-031-34827-3<https://link.springer.com/book/10.1007/978-3-031-34827-3> I waived the royalties to be able to distribute 75% of the text through arxiv, so there is that version as well. But the stories and workouts that are not included may very well be the nicest part. And I should update it. If you would like the physical book but it looks expensive, I can order copies at 40% discount. On the other hand, if you purchase a copy through the link on dusko.org<http://dusko.org/>, then I get 30%. Sorry, I probably shouldn't go on about sales and percentages. I hope it's a useful book. There is more but maybe even this is too much :) -- dusko