You're reading the public-facing archive of the Category Theory Zulip server.
To join the server you need an invite. Anybody can get an invite by contacting Matteo Capucci at name dot surname at gmail dot com.
For all things related to this archive refer to the same person.
In a little over two weeks I'll be giving a talk about my recent paper with Nick Gurski on coherence for pseudomorphisms (details below). The talk will be in-person with a remote option, and I'd be happy to give the details if anyone is interested. (Send me a chat message.)
The paper is arxiv:2312.11261, and I wrote a general-audience overview on this mastodon thread. The main application gives coherence for braided monoidal functors, but the setup is more general.
If that seems like the kind of thing you're interested in, let me know!
Talk details:
Tuesday, 02 April
13:50 Eastern (EDT)
OSU Quantum Symmetries Group
Also, if you just have questions about the paper itself, I'm of course happy to talk about it either here or on mastodon :)
@Niles Johnson: if you type <time
in Zulip, it will give you a time picker that will automatically format the time according to each user's time zone, which makes it easier for people to tell exactly when the talk is. If I converted correctly, it will be ?
Thanks; I think I did it now!
Reminder: I'll be giving this talk a week from today at . I decided to make the middle half of the talk more accessible with a review/introduction to coherence theorems as characterizations of free algebras. So, if that's something that interests you, let me know and I'll send you the zoom details. I'll also post the slides afterward.
Does anyone want a _physical_ copy of my ring categories book with Donald Yau!? I've got a few extra copies from the publisher (just Volume III). As a reminder, all three volumes are available for free download:
https://nilesjohnson.net/drafts/Johnson_Yau_ring_categories.pdf
https://nilesjohnson.net/En-monoidal.html
So I'm just interested if anyone would actually use a physical copy. I posted more details here on mathstodon:
https://mathstodon.xyz/@nilesjohnson/113636070787494856
There, I said I'll mail a copy to anyone who makes a mastodon donation, but I'm open to any donation to any organization you think is appropriate :) I had five copies, and currently three have been claimed.
Hey @Niles Johnson , I would love to learn about ring categories and there is more than a 0 percent chance than I try to use it some day in some math project once I understand how cool it is. Is it ok if I make just a super small donation? (I'm a grad student, not very rich ahah)
Or do you want a donation of the real price of the book?
Jean-Baptiste Vienney said:
Awesome!
Or do you want a donation of the real price of the book?
Oh no, not even close! An amount that approximately covers shipping would be totally fine, and I'm very open to any amount (including zero!) that is reasonable to you.
I got these copies for free (well, free after a giant amount of work ;) and I want them to go to people who might actually use them. The donation idea is just a way for me to make a slightly nontrivial barrier, so that people think about whether they really want a physical copy.
If that's you, just send me a dm or email with your address, and tell me something nice you'll do for someone else in return.