From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/7878 Path: news.gmane.org!not-for-mail From: Thomas Streicher Newsgroups: gmane.science.mathematics.categories Subject: Re: fractions_regular Date: Sat, 28 Sep 2013 21:32:49 +0200 Message-ID: References: Reply-To: Thomas Streicher NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1380495336 19232 80.91.229.3 (29 Sep 2013 22:55:36 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 29 Sep 2013 22:55:36 +0000 (UTC) Cc: categories@mta.ca To: "Eduardo J. Dubuc" Original-X-From: majordomo@mlist.mta.ca Mon Sep 30 00:55:40 2013 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtp3.mta.ca ([138.73.1.186]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VQPtq-0006gi-DZ for gsmc-categories@m.gmane.org; Mon, 30 Sep 2013 00:55:38 +0200 Original-Received: from mlist.mta.ca ([138.73.1.63]:47320) by smtp3.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1VQPrx-00037f-1E; Sun, 29 Sep 2013 19:53:41 -0300 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1VQPrx-0002il-FJ for categories-list@mlist.mta.ca; Sun, 29 Sep 2013 19:53:41 -0300 Content-Disposition: inline In-Reply-To: Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:7878 Archived-At: Dear Eduardo, there is a paper by Benabou from 1989 "Some remarks on two categorcial algebra" in the Lavendhomme Festschrift where he defines pullback and regular congruences on cats with pullbacks and regular categories, respectively. Best regards, Thomas > I would like if sombody can tell me what it is known (or what he/she > knows) about categories of fractions of regular categories. I imagine > that if you have a calculus of right AND left fractions, then the > category of fractions is regular, but what about if the calculus is only > of right fractions ?. Any comments will be welcome. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]