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From: Urs Schreiber <urs.schreiber@googlemail.com>
To: Categories mailing list <categories@mta.ca>
Cc: Toby Bartels <categories@tobybartels.name>
Subject: Re: sieves in nLab
Date: Thu, 3 Mar 2011 18:50:45 +0100	[thread overview]
Message-ID: <E1PvVB3-000210-EB@mlist.mta.ca> (raw)
In-Reply-To: <20110302200410.GA17666@ugcs.caltech.edu>

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/ ]


      parent reply	other threads:[~2011-03-03 17:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-01 19:18 Vasili I. Galchin
2011-03-02 20:04 ` Toby Bartels
     [not found] ` <20110302200410.GA17666@ugcs.caltech.edu>
2011-03-03 17:50   ` Urs Schreiber [this message]

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