From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/2287 Path: news.gmane.org!not-for-mail From: Michael Barr Newsgroups: gmane.science.mathematics.categories Subject: A name Date: Sat, 17 May 2003 21:22:17 -0400 (EDT) Message-ID: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: ger.gmane.org 1241018550 3394 80.91.229.2 (29 Apr 2009 15:22:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:22:30 +0000 (UTC) To: Categories list Original-X-From: rrosebru@mta.ca Sun May 18 13:10:24 2003 -0300 Return-path: Envelope-to: categories-list@mta.ca Delivery-date: Sun, 18 May 2003 13:10:24 -0300 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.10) id 19HQfb-0002z6-00 for categories-list@mta.ca; Sun, 18 May 2003 13:05:55 -0300 X-Sender: barr@triples.math.mcgill.ca Original-Sender: cat-dist@mta.ca Precedence: bulk X-Keywords: X-UID: 23 Original-Lines: 11 Xref: news.gmane.org gmane.science.mathematics.categories:2287 Archived-At: It is well known that epimorphisms in rings do not have to be surjective. Suppose C is a category and R is a ring object in C. I am looking for a name to call maps X --> Y in C with the property that Hom(Y,R) --> Hom(X,R) is epic in rings. It is a kind of weak R-injectivity. Does anyone have a name for this? Michael