From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/2846 Path: news.gmane.org!not-for-mail From: "John Baez" Newsgroups: gmane.science.mathematics.categories Subject: weak double categories? Date: Wed, 26 Oct 2005 13:08:41 -0700 (PDT) Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1241018940 6058 80.91.229.2 (29 Apr 2009 15:29:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:29:00 +0000 (UTC) To: categories@mta.ca (categories) Original-X-From: rrosebru@mta.ca Thu Oct 27 17:30:40 2005 -0300 Return-path: Envelope-to: categories-list@mta.ca Delivery-date: Thu, 27 Oct 2005 17:30:40 -0300 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.52) id 1EVEI7-0001JV-6G for categories-list@mta.ca; Thu, 27 Oct 2005 17:24:03 -0300 X-Mailer: ELM [version 2.5 PL6] Original-Sender: cat-dist@mta.ca Precedence: bulk X-Keywords: X-UID: 21 Original-Lines: 15 Xref: news.gmane.org gmane.science.mathematics.categories:2846 Archived-At: Dear Categorists - If you weaken the notion of 2-category you get the notion of bicategory. Has anyone tried to correspondingly weaken the notion of double category, so that a bicategory is a special sort of "weak double category" in analogy to the ways in which a 2-category is a special sort of double category? Did anyone succeed? Best, jb