From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/420 Path: news.gmane.org!not-for-mail From: categories Newsgroups: gmane.science.mathematics.categories Subject: Re: comma categories Date: Tue, 1 Jul 1997 15:13:55 -0300 (ADT) Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: ger.gmane.org 1241016955 25673 80.91.229.2 (29 Apr 2009 14:55:55 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 14:55:55 +0000 (UTC) To: categories Original-X-From: cat-dist Tue Jul 1 15:13:56 1997 Original-Received: by mailserv.mta.ca; id AA21618; Tue, 1 Jul 1997 15:13:55 -0300 Original-Lines: 33 Xref: news.gmane.org gmane.science.mathematics.categories:420 Archived-At: Date: Tue, 1 Jul 1997 11:38:17 -0400 From: Michael Barr You are right. It is called slice categories. Michael Barr >>From john@cs.keele.ac.uk Tue Jul 1 04:09:41 1997 Received: from gabriel.cc.keele.ac.uk (gabriel.cc.keele.ac.uk [160.5.20.2]) by triples.math.mcgill.ca (8.6.8/8.6.6) with ESMTP id EAA08244 for ; Tue, 1 Jul 1997 04:09:39 -0400 Received: from nina.cs.keele.ac.uk by gabriel with SMTP (PP); Tue, 1 Jul 1997 09:17:11 +0100 From: "John G. Stell" Date: Tue, 1 Jul 1997 09:14:56 +0100 Message-Id: <6826.199707010814@nina.cs.keele.ac.uk> To: barr@triples.math.mcgill.ca Subject: comma categories Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-MD5: P4mFcjNdTLEYzYzmOK7OUw== Status: R > Not that I am blowing my own horn (but why not), you will find something > about comma categories in Barr & Wells, Category Theory for Computing > Science. But no, I know of no other research along those lines. > > Michael Barr Pehaps it would be helpful to the original enquirer to say where it can be found. I am unable to find it in the index of either edition. John Stell