From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/4631 Path: news.gmane.org!not-for-mail From: pierre.ageron@math.unicaen.fr Newsgroups: gmane.science.mathematics.categories Subject: Re: are sketches math objects? Date: Tue, 23 Sep 2008 22:06:00 +0200 (CEST) Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1241020068 14124 80.91.229.2 (29 Apr 2009 15:47:48 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:47:48 +0000 (UTC) To: categories@mta.ca Original-X-From: rrosebru@mta.ca Tue Sep 23 21:14:26 2008 -0300 Return-path: Envelope-to: categories-list@mta.ca Delivery-date: Tue, 23 Sep 2008 21:14:26 -0300 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.61) (envelope-from ) id 1KiHv0-0004d7-QN for categories-list@mta.ca; Tue, 23 Sep 2008 21:07:46 -0300 Original-Sender: cat-dist@mta.ca Precedence: bulk X-Keywords: X-UID: 127 Original-Lines: 13 Xref: news.gmane.org gmane.science.mathematics.categories:4631 Archived-At: The ontological status of "presentations of structures" is a key issue in the history of mathematics in the 20th century. I wrote a number of historical material about it. The following (in French) are available on the Internet : http://people.math.jussieu.fr/~burroni/mapage/Burroni.pdf http://www.univ-nancy2.fr/poincare/colloques/symp02/abstracts/ageron.pdf Pierre Ageron