categories - Category Theory list
 help / color / mirror / Atom feed
From: "Eduardo J. Dubuc" <edubuc@dm.uba.ar>
To: Categories list <categories@mta.ca>
Subject: isomorphisms
Date: Sat, 29 May 2010 18:18:28 -0300	[thread overview]
Message-ID: <E1OIjRj-0006J0-RS@mailserv.mta.ca> (raw)

isomorphims appear not only in examples but are essential also in the theory.
For example Grothendieck defines limits and colimits of categories (as
universal pseudocones) in SGA4 by means of an isomorphism of categories. Same
for toposes.

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


             reply	other threads:[~2010-05-29 21:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-29 21:18 Eduardo J. Dubuc [this message]
2010-05-30 15:11 ` isomorphisms Colin McLarty
2010-05-31  2:51   ` isomorphisms Michael Shulman
2010-06-01  3:26     ` Equality and fibration Joyal, André
2010-06-02  9:34       ` Prof. Peter Johnstone
2010-06-01 12:57 ` Peter LeFanu Lumsdaine

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=E1OIjRj-0006J0-RS@mailserv.mta.ca \
    --to=edubuc@dm.uba.ar \
    --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).