From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/1898 Path: news.gmane.org!not-for-mail From: Jean-Pierre Marquis Newsgroups: gmane.science.mathematics.categories Subject: Looking for adjoints Date: Wed, 28 Mar 2001 15:31:18 -0800 Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1241018192 1093 80.91.229.2 (29 Apr 2009 15:16:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:16:32 +0000 (UTC) To: Original-X-From: rrosebru@mta.ca Fri Mar 30 12:28:40 2001 -0400 Return-Path: Original-Received: (from Majordom@localhost) by mailserv.mta.ca (8.11.1/8.11.1) id f2UFS5418510 for categories-list; Fri, 30 Mar 2001 11:28:05 -0400 (AST) X-Authentication-Warning: mailserv.mta.ca: Majordom set sender to cat-dist@mta.ca using -f User-Agent: Microsoft Outlook Express Macintosh Edition - 5.01 (1630) Original-Sender: cat-dist@mta.ca Precedence: bulk X-Keywords: X-UID: 24 Original-Lines: 13 Xref: news.gmane.org gmane.science.mathematics.categories:1898 Archived-At: I would like to have a large pool of examples of adjoint functors in as many different fields of mathematics as possible. I am looking for the "nicest", in whatever sense you can think of this expression (e.g. unexpected, their existence is equivalent to a classical theorem, etc), cases in various fields. References or examples anyone? (Besides the standard ones found in Mac Lane, etc.) Thank you, Jean-Pierre Marquis