From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/286 Path: news.gmane.org!not-for-mail From: categories Newsgroups: gmane.science.mathematics.categories Subject: anafunctors Date: Fri, 24 Jan 1997 10:54:41 -0400 (AST) Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: ger.gmane.org 1241016870 25035 80.91.229.2 (29 Apr 2009 14:54:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 14:54:30 +0000 (UTC) To: categories Original-X-From: cat-dist Fri Jan 24 10:55:16 1997 Original-Received: by mailserv.mta.ca; id AA22685; Fri, 24 Jan 1997 10:54:41 -0400 Original-Lines: 13 Xref: news.gmane.org gmane.science.mathematics.categories:286 Archived-At: Date: Thu, 23 Jan 1997 13:26:33 -0800 From: john baez What is the locus classicus for "anafunctors"? As far as I know, an anafunctor F: C -> D is a presheaf on C x D^{op} such that F(c,.) is representable for any object c of C. Is this how it's normally defined? Where is composition of anafunctors discussed? Are there other names for these things? John Baez