From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/10894 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Steve Awodey Newsgroups: gmane.science.mathematics.categories Subject: Online category theory resources Date: Tue, 10 Jan 2023 14:24:20 -0500 Message-ID: Reply-To: Steve Awodey Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.300.101.1.3\)) Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23144"; mail-complaints-to="usenet@ciao.gmane.io" To: Peter Smith , categories net Original-X-From: majordomo@rr.mta.ca Wed Jan 11 23:05:46 2023 Return-path: Envelope-to: gsmc-categories@m.gmane-mx.org Original-Received: from smtp2.mta.ca ([198.164.44.75]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pFjEA-0005jH-2A for gsmc-categories@m.gmane-mx.org; Wed, 11 Jan 2023 23:05:46 +0100 Original-Received: from rr.mta.ca ([198.164.44.159]:38608) by smtp2.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1pFjDI-0005yV-UQ; Wed, 11 Jan 2023 18:04:52 -0400 Original-Received: from majordomo by rr.mta.ca with local (Exim 4.92.1) (envelope-from ) id 1pFjBl-0001QD-AN for categories-list@rr.mta.ca; Wed, 11 Jan 2023 18:03:17 -0400 Precedence: bulk Xref: news.gmane.io gmane.science.mathematics.categories:10894 Archived-At: Dear Peter (and Categories), Thank you for recommending my textbook on your website, but I am afraid = that the link you give there went to a directory containing chapters = from the obsolete *first edition* from 2006, which had some problems = that were corrected in the *second edition* from 2010. I was wondering = why these outdated files are still circulating online, and now I know: = they were still available on my own (old) website!=20 In any case, they are definitely *not* to be recommended, and are = superseded by the second edition - which, unfortunately, is not freely = available online in any (authorized) form. What *is* available is a = draft textbook-in-progress on categorical logic, the zeroth chapter of = which is a primer on category theory that some students may find useful. = The latest version is linked to from my website under = courses/categorical logic/lecture notes, or here: https://awodey.github.io/catlog/notes/catlog0.pdf I=E2=80=99m sorry for the trouble, but I have now (finally) removed the = old directory with the out-dated chapters, so you will need to correct = the (dead) link to it on your website. Thanks for compiling and = maintaining your web pages on category theory - they are a valuable = resource! Best wishes, Steve > On Jan 8, 2023, at 7:02 AM, Peter Smith wrote: >=20 > A while back, I constructed a webpage linking to online materials on = category theory at an introductory/middling level, including lecture = notes, (legally available!!) books, and a few videos of lectures. = You=E2=80=99ll find an updated version at=20 >=20 > https://www.logicmatters.net/categories/ >=20 > I initially put this together for my own use, to keep track of things = I=E2=80=99d found. But the page gets about 1500 visits a month, so = obviously some others are finding it useful too.=20 >=20 > I=E2=80=99m certainly not aiming to be completist, but I have no doubt = missed some good things. So do please do let me know of appropriate = recent materials I should be adding to the list. And perhaps spread the = word to students who might find it useful! >=20 > Peter Smith [For admin and other information see: http://www.mta.ca/~cat-dist/ ]