From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/824 Path: news.gmane.org!not-for-mail From: Fred E J Linton Newsgroups: gmane.science.mathematics.categories Subject: RE: Upper case and lower case Date: Wed, 15 Jul 1998 18:38:40 -0500 (EST) Message-ID: <98071523384075/0004142427PV1EM@mcimail.com> NNTP-Posting-Host: main.gmane.org X-Trace: ger.gmane.org 1241017205 27581 80.91.229.2 (29 Apr 2009 15:00:05 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:00:05 +0000 (UTC) To: Categories Original-X-From: cat-dist Thu Jul 16 18:08:06 1998 Original-Received: (from Majordom@localhost) by mailserv.mta.ca (8.8.8/8.8.8) id RAA09585 for categories-list; Thu, 16 Jul 1998 17:05:54 -0300 (ADT) X-Authentication-Warning: mailserv.mta.ca: Majordom set sender to cat-dist@mta.ca using -f Original-Sender: cat-dist@mta.ca Precedence: bulk Original-Lines: 12 Xref: news.gmane.org gmane.science.mathematics.categories:824 Archived-At: David Feldman erroneously credits to me an insight that is not mine, but Peter Johnstone's. Cf. {Topos Theory}, p. 230: > ... If we regard two distinct points having the same closure > as an instance of double vision (and an irreducible closed set with no > generic point as a species of pink elephant!), then the reason for the > term "sober space" will be apparent. (Thanks, David, but credit where credit is due.) -- Fred