From: "Joyal, André" <joyal.andre@uqam.ca>
To: <categories@mta.ca>
Subject: equality is beautiful
Date: Fri, 8 Jan 2010 22:29:00 -0500 [thread overview]
Message-ID: <E1NTcBM-0003xK-Go@mailserv.mta.ca> (raw)
In-Reply-To: <B3C24EA955FF0C4EA14658997CD3E25E370F5673@CAHIER.gst.uqam.ca>
Dear All
Many people seem to distrust the equality
relation between the objects of a (large) category.
Is this a philosophical conundrum or a mathematical problem?
Can we define a notion of (large) category without supposing
that its (large) set of objects has a diagonal?
Best,
André
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next prev parent reply other threads:[~2010-01-09 3:29 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-03 7:23 the definition of "evil" Peter Selinger
2010-01-03 17:10 ` Claudio Hermida
2010-01-03 17:53 ` John Baez
2010-01-04 17:14 ` Michael Shulman
2010-01-04 9:24 ` Urs Schreiber
2010-01-05 20:04 ` dagger not evil Joyal, André
2010-01-06 8:40 ` Toby Bartels
2010-01-07 5:50 ` Peter Selinger
2010-01-08 0:45 ` Joyal, André
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F5672@CAHIER.gst.uqam.ca>
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F5673@CAHIER.gst.uqam.ca>
2010-01-09 3:29 ` Joyal, André [this message]
2010-01-10 17:17 ` equality is beautiful Steve Vickers
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F5677@CAHIER.gst.uqam.ca>
2010-01-12 10:25 ` A challenge to all Steve Vickers
2010-01-12 16:24 ` Joyal, André
2010-01-13 0:03 ` David Roberts
2010-01-13 0:47 ` burroni
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F5688@CAHIER.gst.uqam.ca>
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F568B@CAHIER.gst.uqam.ca>
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F568D@CAHIER.gst.uqam.ca>
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F568F@CAHIER.gst.uqam.ca>
2010-01-15 19:33 ` Joyal, André
2010-01-20 5:52 ` Michael Shulman
2010-01-13 1:02 ` Jeff Egger
2010-01-13 2:28 ` Michael Shulman
2010-01-13 20:53 ` equality Dusko Pavlovic
2010-01-14 14:23 ` equality Colin McLarty
2010-01-13 23:43 ` A challenge to all Peter LeFanu Lumsdaine
2010-01-15 19:40 ` Thomas Streicher
2010-01-10 19:54 ` equality is beautiful Vaughan Pratt
2010-01-11 2:26 ` Richard Garner
2010-01-13 11:53 ` lamarche
2010-01-13 21:29 ` Michael Shulman
[not found] ` <B3C24EA955FF0C4EA14658997CD3E25E370F565E@CAHIER.gst.uqam.ca>
2010-01-06 15:44 ` dagger not evil (2) Joyal, André
2010-03-14 8:51 equality is beautiful David Leduc
2010-03-15 11:25 ` Toby Bartels
2010-03-16 1:59 ` Michael Shulman
[not found] ` <4B9EE601.5070801@uchicago.edu>
2010-03-16 8:03 ` Richard Garner
2010-03-20 7:18 ` David Leduc
2010-03-21 2:17 ` Michael Shulman
[not found] ` <c3f821001003201917w4476a777i53fda02cb9bece66@mail.gmail.com>
2010-03-21 17:54 ` Richard Garner
2010-03-21 19:36 ` Toby Bartels
2010-03-22 9:17 ` Thomas Streicher
2010-03-22 16:15 ` Michael Shulman
2010-03-21 21:32 Bas Spitters
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