From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/6517 Path: news.gmane.org!not-for-mail From: N.Bowler@dpmms.cam.ac.uk Newsgroups: gmane.science.mathematics.categories Subject: Re:categories with several compositions? Date: 03 Feb 2011 12:10:01 +0000 Message-ID: References: Reply-To: N.Bowler@dpmms.cam.ac.uk NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=ISO-8859-1 X-Trace: dough.gmane.org 1296833077 3839 80.91.229.12 (4 Feb 2011 15:24:37 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 4 Feb 2011 15:24:37 +0000 (UTC) Cc: "'categories@mta.ca'" To: John Stell Original-X-From: majordomo@mlist.mta.ca Fri Feb 04 16:24:33 2011 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtpx.mta.ca ([138.73.1.114]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PlNWS-0000Iy-DH for gsmc-categories@m.gmane.org; Fri, 04 Feb 2011 16:24:32 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:34168) by smtpx.mta.ca with esmtp (Exim 4.71) (envelope-from ) id 1PlNWK-0006yT-Hh; Fri, 04 Feb 2011 11:24:24 -0400 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1PlNWG-0008EP-OL for categories-list@mlist.mta.ca; Fri, 04 Feb 2011 11:24:20 -0400 In-Reply-To: Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:6517 Archived-At: I apologise for cluttering the list up further, but I misunderstood your second question, so my answer wasn't quite right. The objects you asked about can be analysed in terms of categories with a designated collection of invertible endomorphisms. Nathan [For admin and other information see: http://www.mta.ca/~cat-dist/ ]