From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/8111 Path: news.gmane.org!not-for-mail From: Samuel Dean Newsgroups: gmane.science.mathematics.categories Subject: Re: Isbell envelope Date: Tue, 13 May 2014 07:14:11 +0100 Message-ID: References: Reply-To: Samuel Dean NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1399980105 13187 80.91.229.3 (13 May 2014 11:21:45 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 May 2014 11:21:45 +0000 (UTC) To: Richard Garner , categories@mta.ca Original-X-From: majordomo@mlist.mta.ca Tue May 13 13:21:39 2014 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 1WkAmA-0000d7-GI for gsmc-categories@m.gmane.org; Tue, 13 May 2014 13:21:38 +0200 Original-Received: from mlist.mta.ca ([138.73.1.63]:58113) by smtp3.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1WkAlG-0002tH-DN; Tue, 13 May 2014 08:20:42 -0300 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1WkAlE-00016m-FW for categories-list@mlist.mta.ca; Tue, 13 May 2014 08:20:40 -0300 Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:8111 Archived-At: Simon Willerton has written about the Isbell completion recently, see http://www.tac.mta.ca/tac/volumes/28/22/28-22abs.html. Sam On May 12, 2014 1:10 PM, "Richard Garner" wrote: > Dear categorists, > > One of the more folklorish constructions in category theory is that of > the Isbell envelope. The folklorishness, in this case, seems to be so > severe that I cannot find mention made of it in any published article at > all (though there are several to the related notion of Isbell > conjugacy). I am writing, therefore, in the hope that this is only due > to my own poor knowledge of the literature, and that some other reader > of this list may be able to put me to rights. > > Richard [For admin and other information see: http://www.mta.ca/~cat-dist/ ]