From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/6455 Path: news.gmane.org!not-for-mail From: Mike Stay Newsgroups: gmane.science.mathematics.categories Subject: Reference for monoidal bicategory of spans? Date: Mon, 10 Jan 2011 15:18:24 -0800 Message-ID: Reply-To: Mike Stay NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: dough.gmane.org 1294749551 1988 80.91.229.12 (11 Jan 2011 12:39:11 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 11 Jan 2011 12:39:11 +0000 (UTC) To: categories Original-X-From: majordomo@mlist.mta.ca Tue Jan 11 13:39:06 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 1PcdVC-0000XZ-53 for gsmc-categories@m.gmane.org; Tue, 11 Jan 2011 13:39:06 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:44216) by smtpx.mta.ca with esmtp (Exim 4.71) (envelope-from ) id 1PcdUz-0000IV-7I; Tue, 11 Jan 2011 08:38:53 -0400 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1PcdUu-00046p-3P for categories-list@mlist.mta.ca; Tue, 11 Jan 2011 08:38:48 -0400 Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:6455 Archived-At: Can anyone provide a reference for the fact that given a category C with pullbacks and finite products, you get a monoidal bicategory Span(C)? -- Mike Stay - metaweta@gmail.com http://www.cs.auckland.ac.nz/~mike http://reperiendi.wordpress.com [For admin and other information see: http://www.mta.ca/~cat-dist/ ]