From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/6207 Path: news.gmane.org!not-for-mail From: Toby Bartels Newsgroups: gmane.science.mathematics.categories Subject: Re: are fibrations evil? Date: Wed, 22 Sep 2010 14:06:24 -0700 Message-ID: References: <20100922025245.GA14958@ugcs.caltech.edu> <4C9A5156.3010307@dm.uba.ar> Reply-To: Toby Bartels NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1285340129 10476 80.91.229.12 (24 Sep 2010 14:55:29 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 24 Sep 2010 14:55:29 +0000 (UTC) Cc: "Eduardo J. Dubuc" To: categories Original-X-From: majordomo@mlist.mta.ca Fri Sep 24 16:55:28 2010 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtpx.mta.ca ([138.73.1.138]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Oz9gL-0002Zu-7G for gsmc-categories@m.gmane.org; Fri, 24 Sep 2010 16:55:25 +0200 Original-Received: from mlist.mta.ca ([138.73.1.63]:34746) by smtpx.mta.ca with esmtp (Exim 4.71) (envelope-from ) id 1Oz9fU-0008Gi-PB; Fri, 24 Sep 2010 11:54:32 -0300 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1Oz9fQ-0003lo-HW for categories-list@mlist.mta.ca; Fri, 24 Sep 2010 11:54:28 -0300 Content-Disposition: inline In-Reply-To: <4C9A5156.3010307@dm.uba.ar> Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:6207 Archived-At: Eduardo J. Dubuc wrote at first: >Dear Toby, your choice of example is very unfortunate. Mac Lane wrote >that category theory was invented to define functor, and that functor was >invented to define "natural" transformation. Yes, I know; that was quite deliberate. I'm afraid that I no longer have any idea how to communicate with you on this matter. I'm sure that you don't understand my opinion, and it's clear that I must not understand yours, but beyond that I have no idea what upsets you, and I'm not going to worry about it any more. --Toby [For admin and other information see: http://www.mta.ca/~cat-dist/ ]