From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/4999 Path: news.gmane.org!not-for-mail From: "Prof. Peter Johnstone" Newsgroups: gmane.science.mathematics.categories Subject: Re: Topology on cohomology groups Date: Sun, 21 Jun 2009 22:20:03 +0100 (BST) Message-ID: Reply-To: "Prof. Peter Johnstone" NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Trace: ger.gmane.org 1245678823 11339 80.91.229.12 (22 Jun 2009 13:53:43 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 22 Jun 2009 13:53:43 +0000 (UTC) To: Andrew Stacey , categories@mta.ca Original-X-From: categories@mta.ca Mon Jun 22 15:53:41 2009 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 4.50) id 1MIjxs-000548-3Y for gsmc-categories@m.gmane.org; Mon, 22 Jun 2009 15:53:40 +0200 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.61) (envelope-from ) id 1MIjKH-0000R2-78 for categories-list@mta.ca; Mon, 22 Jun 2009 10:12:45 -0300 Original-Sender: categories@mta.ca Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:4999 Archived-At: On Fri, 19 Jun 2009, Andrew Stacey wrote: > I'm not sure if this is quite what you are looking for, but the topology on > cohomology theories is given as an inverse limit (if I have my limits the > correct way round) over the finite skeleta. Not really a contribution to the mathematical question, but I'm struck by the fact that both Andrew Salch and Andrew Stacey, in their replies to Steve Vickers, use the plural "skeleta". I used to do that when I was a student, as a way of winding-up my teachers, but it isn't justifiable. The English word "skeleton" is indeed derived from a Greek root (the past participle of the verb "skellein", to wither or dry up), but it doesn't exist as a noun in Greek. There is therefore no justification for giving it an imagined Greek plural. Having in my time devoted some effort to fighting the bogus (but in fact more justifiable) Greek plural "topoi", I feel bound to protest against this one too. Peter Johnstone [For admin and other information see: http://www.mta.ca/~cat-dist/ ]