From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/7187 Path: news.gmane.org!not-for-mail From: David Spivak Newsgroups: gmane.science.mathematics.categories Subject: question about discrete op-fibrations Date: Tue, 31 Jan 2012 18:03:35 -0600 Message-ID: Reply-To: David Spivak NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: dough.gmane.org 1328105487 31126 80.91.229.3 (1 Feb 2012 14:11:27 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 1 Feb 2012 14:11:27 +0000 (UTC) To: categories list Original-X-From: majordomo@mlist.mta.ca Wed Feb 01 15:11:26 2012 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtpx.mta.ca ([138.73.1.4]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RsauD-0006sE-5Y for gsmc-categories@m.gmane.org; Wed, 01 Feb 2012 15:11:25 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:43631) by smtpx.mta.ca with esmtp (Exim 4.77) (envelope-from ) id 1RsasR-0005gZ-1H; Wed, 01 Feb 2012 10:09:35 -0400 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1RsasQ-0002zc-9d for categories-list@mlist.mta.ca; Wed, 01 Feb 2012 10:09:34 -0400 Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:7187 Archived-At: Hi all, Here's a quick question perhaps someone here can answer easily. Let DOF denote the category whose objects are small categories C,D, etc. and in which Hom(C,D) is the set of discrete op-fibrations C-->D. For a category C, let DOF_{C/} denote the coslice over C. Question: Does there exist a terminal object in DOF_{C/}? Thanks! David [For admin and other information see: http://www.mta.ca/~cat-dist/ ]