From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/6566 Path: news.gmane.org!not-for-mail From: Urs Schreiber Newsgroups: gmane.science.mathematics.categories Subject: Re: sieves in nLab Date: Thu, 3 Mar 2011 18:50:45 +0100 Message-ID: References: <20110302200410.GA17666@ugcs.caltech.edu> Reply-To: Urs Schreiber NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: dough.gmane.org 1299245799 6203 80.91.229.12 (4 Mar 2011 13:36:39 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 4 Mar 2011 13:36:39 +0000 (UTC) Cc: Toby Bartels To: Categories mailing list Original-X-From: majordomo@mlist.mta.ca Fri Mar 04 14:36:33 2011 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from smtpx.mta.ca ([138.73.1.114]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PvVBE-0004cP-JV for gsmc-categories@m.gmane.org; Fri, 04 Mar 2011 14:36:28 +0100 Original-Received: from mlist.mta.ca ([138.73.1.63]:41245) by smtpx.mta.ca with esmtp (Exim 4.71) (envelope-from ) id 1PvVB5-0004x1-UY; Fri, 04 Mar 2011 09:36:19 -0400 Original-Received: from majordomo by mlist.mta.ca with local (Exim 4.71) (envelope-from ) id 1PvVB3-000210-EB for categories-list@mlist.mta.ca; Fri, 04 Mar 2011 09:36:17 -0400 In-Reply-To: <20110302200410.GA17666@ugcs.caltech.edu> Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:6566 Archived-At: Dear Vasili; concerning the nLab entry "sieve" http://ncatlab.org/nlab/show/sieve you had written >I am confused about the notion of "encoding" regarding sieves: It seems that I had once used this word in an attempt to express the fact that while the notions of "sieve" (on an object) and "subfunctor" (of the functor represented by that object) are not _identitcal_ notions, one does determine ("encode") the other. Sorry if that wasn't a good formulation. Finn Lawler has meanwhile been so kind to improve the phrasing a bit. By the way, questions and comments about nLab pages are mostly best sent to the community of people who work on that wiki and these people can jointly be contacted by posting a message to the "nForum". There is now for instance a thread discussing your question, which you can see here: http://www.math.ntnu.no/~stacey/Mathforge/nForum/comments.php?DiscussionID=2534&page=1 All the best, Urs [For admin and other information see: http://www.mta.ca/~cat-dist/ ]