From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/5585 Path: news.gmane.org!not-for-mail From: peasthope@shaw.ca Newsgroups: gmane.science.mathematics.categories Subject: abstraction of notation from sets. Date: Tue, 23 Feb 2010 16:43:43 -0800 Message-ID: Reply-To: peasthope@shaw.ca NNTP-Posting-Host: lo.gmane.org X-Trace: dough.gmane.org 1267019887 18046 80.91.229.12 (24 Feb 2010 13:58:07 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 24 Feb 2010 13:58:07 +0000 (UTC) To: categories@mta.ca Original-X-From: categories@mta.ca Wed Feb 24 14:58:02 2010 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from mailserv.mta.ca ([138.73.1.1]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1NkHkX-0003ZF-V2 for gsmc-categories@m.gmane.org; Wed, 24 Feb 2010 14:58:02 +0100 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.61) (envelope-from ) id 1NkHCd-0004Zj-6a for categories-list@mta.ca; Wed, 24 Feb 2010 09:22:59 -0400 Original-Sender: categories@mta.ca Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:5585 Archived-At: When S is a set, the notation "a \epsilon S" is familiar. Is this ever extended to CT? All the texts I recall use natural language such as "A is an object of C". What if a more symbolic notation is required? Thanks, ... Peter E. -- Google "pathology workshop" [For admin and other information see: http://www.mta.ca/~cat-dist/ ]