categories - Category Theory list
 help / color / mirror / Atom feed
From: jim stasheff <jds@math.upenn.edu>
To: Categories list <categories@mta.ca>
Subject: question
Date: Sun, 20 Sep 2009 09:21:13 -0400	[thread overview]
Message-ID: <E1Mpimk-0003jB-F4@mailserv.mta.ca> (raw)

What do you call it when you have   one (small) category being a (full)
subcategory of another , and every object in the big category is
isomorphic to one in the small category ? This is the case for the
category given by objects hom(S,A) ,and morphisms given by the equivalence
relation hom(T,A) ,as a subcategory of stack(A) . Is there an
equivalence of categories ?

jim



[For admin and other information see: http://www.mta.ca/~cat-dist/ ]


             reply	other threads:[~2009-09-20 13:21 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-20 13:21 jim stasheff [this message]
  -- strict thread matches above, loose matches on Subject: below --
2009-09-23 14:17 question John Kennison
2009-09-23 10:00 question Prof. Peter Johnstone
2009-09-22 12:26 question John Kennison
2009-09-22 11:56 question Robin Adams
2009-09-22  7:04 question Fred Linton
2009-09-22  2:14 question Ross Street
2009-09-21 14:54 question Rory Lucyshyn-Wright
2001-01-26 11:32 Question S.J.Vickers
2001-01-23 22:33 Question Michael J. Healy 425-865-3123
2001-01-17  0:17 Question Michael J. Healy 425-865-3123
2001-01-17  4:29 ` Question Joseph R. Kiniry
2001-01-23  5:55 ` Question Dusko Pavlovic
2000-05-31  2:08 question adrian duma

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=E1Mpimk-0003jB-F4@mailserv.mta.ca \
    --to=jds@math.upenn.edu \
    --cc=categories@mta.ca \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).