From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/7922 Path: news.gmane.org!not-for-mail From: David Reid Newsgroups: gmane.science.mathematics.categories Subject: Re: Difference and Duality Date: Tue, 19 Nov 2013 04:50:23 +0000 (UTC) Message-ID: Reply-To: David Reid NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1384889527 26196 80.91.229.3 (19 Nov 2013 19:32:07 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 19 Nov 2013 19:32:07 +0000 (UTC) To: categories@mta.ca Original-X-From: majordomo@mlist.mta.ca Tue Nov 19 20:32:12 2013 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtp3.mta.ca ([138.73.1.186]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Vir1v-00048k-6q for gsmc-categories@m.gmane.org; Tue, 19 Nov 2013 20:32:11 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:41021) by smtp3.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1Vir0L-0000oe-6V; Tue, 19 Nov 2013 15:30:33 -0400 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1Vir0K-00056y-8a for categories-list@mlist.mta.ca; Tue, 19 Nov 2013 15:30:32 -0400 Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:7922 Archived-At: Hi, Posina, I have downloaded "Conceptual Mathematics" and will look at it and your question later, but in the meantime, I hope that others will respond more quickly and directly to your question. However, in case you do not receive adequate replies on Linked, may I suggest two other forums which may be more fruitful. http://mathematica.stackexchange.com/ and sometimes http://www.physicsforums.com/forumdisplay.php?s=6f5ea9f0f093fb645c4a319aad65a89c&f=78 Both require registration, but they are free and do not seem to generate spam. David Reid [For admin and other information see: http://www.mta.ca/~cat-dist/ ]