From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/1549 Path: news.gmane.org!not-for-mail From: Ross Street Newsgroups: gmane.science.mathematics.categories Subject: A question on: Date: Mon, 19 Jun 2000 17:13:05 +1000 Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-Trace: ger.gmane.org 1241017916 31747 80.91.229.2 (29 Apr 2009 15:11:56 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:11:56 +0000 (UTC) To: "categories@mta.ca" Original-X-From: rrosebru@mta.ca Mon Jun 19 08:54:25 2000 -0300 Original-Received: (from Majordom@localhost) by mailserv.mta.ca (8.9.3/8.9.3) id IAA09805 for categories-list; Mon, 19 Jun 2000 08:46:12 -0300 (ADT) X-Authentication-Warning: mailserv.mta.ca: Majordom set sender to cat-dist@mta.ca using -f X-Sender: street@hera.mpce.mq.edu.au Original-Sender: cat-dist@mta.ca Precedence: bulk Original-Lines: 30 Xref: news.gmane.org gmane.science.mathematics.categories:1549 Archived-At: I thought the CatNet would be interested in the following question which appeared on . The letter was pointed out to me by a colleague at Macquarie. --Ross ************************************************* From: mathwft@math.canterbury.ac.nz (Bill Taylor) Newsgroups: sci.math Subject: Query about Category Theory. Date: 18 Jun 2000 05:36:30 GMT Organization: Department of Mathematics and Statistics, University of Canterbury, Christchurch, NewZealand Does anyone know of any cases where Category Theory (morphisms, functors & all that) has helped solve an unsolved problem? That is, a problem in some other branch of math, posed without reference to categorical ideas, and previously unsolved, that was first solved via Category T. I realize that CT provides a unifying framework for many seemingly disparate ideas in math, and that is a fine thing of course; but I was just wondering if it had this problem-solving capability. TIA for any helpful responses. ---------------------------------------------------------------------------- --- Bill Taylor W.Taylor@math.canterbury.ac.nz