From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/8582 Path: news.gmane.org!not-for-mail From: "Fred E.J. Linton" Newsgroups: gmane.science.mathematics.categories Subject: Re: coequalizers in the category of algebras for the double powerset triple Date: Fri, 27 Mar 2015 12:30:35 -0400 Message-ID: Reply-To: "Fred E.J. Linton" NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1427498034 16593 80.91.229.3 (27 Mar 2015 23:13:54 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 27 Mar 2015 23:13:54 +0000 (UTC) To: Michael Barr , Categories mailing list Original-X-From: majordomo@mlist.mta.ca Sat Mar 28 00:13:53 2015 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtp3.mta.ca ([138.73.1.127]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YbdRj-0004h1-1k for gsmc-categories@m.gmane.org; Sat, 28 Mar 2015 00:13:47 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:58747) by smtp3.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1YbdQu-0007OS-QG; Fri, 27 Mar 2015 20:12:56 -0300 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1YbdQv-0000hx-0v for categories-list@mlist.mta.ca; Fri, 27 Mar 2015 20:12:57 -0300 Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:8582 Archived-At: If I had thought Richard's monad was on the category of sets, I'd have answered the same way: | From: Michael Barr | = | > Recently there was a question as to whether these coequalizers exist.= = | > Unless I have misunderstood the question, the affirmative answer is g= iven | > in the example in the middle of p.72 of Linton's paper in TAC reprint= #18. But Richard writes of his monad as being "on the category of locales", = and there I'm not so sure ... . Cheers, -- Fred [For admin and other information see: http://www.mta.ca/~cat-dist/ ]