From: Bas Spitters <spitters@cs.ru.nl>
To: Thomas Streicher <streicher@mathematik.tu-darmstadt.de>
Cc: Toby Bartels <toby+categories@ugcs.caltech.edu>, categories@mta.ca
Subject: Re: Is equality evil?
Date: Fri, 24 Sep 2010 14:50:17 +0200 [thread overview]
Message-ID: <E1OzIW1-000276-Tk@mlist.mta.ca> (raw)
In-Reply-To: <E1OxKoj-0004xW-B9@mlist.mta.ca>
> Intensional Id-types might be convenient for providing a logic where equality
> gets identified with isomorphism or even weak equivalence. But that's not
> avoiding equality it's rather `liberal'ising it.
Vladimir Voevodsky just posted a draft manuscript about these issues:
http://www.math.ias.edu/~vladimir/Site3/Univalent_Foundations.html
Bas
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next prev parent reply other threads:[~2010-09-24 12:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-15 11:43 are fibrations evil? Thomas Streicher
2010-09-16 0:28 ` Michael Shulman
2010-09-16 1:14 ` Peter LeFanu Lumsdaine
2010-09-16 5:14 ` Is equality evil? Vaughan Pratt
2010-09-17 8:28 ` Toby Bartels
2010-09-18 14:11 ` Thomas Streicher
2010-09-19 20:30 ` Erik Palmgren
2010-09-24 12:50 ` Bas Spitters [this message]
[not found] ` <20100918141110.GC9467@mathematik.tu-darmstadt.de>
2010-09-22 4:00 ` Toby Bartels
2010-09-25 16:18 ` Michael Shulman
[not found] ` <20100922040041.GB14958@ugcs.caltech.edu>
2010-09-22 10:27 ` Thomas Streicher
2010-09-16 8:50 ` why it matters that fibrations are "evil" Thomas Streicher
[not found] ` <AANLkTinosTZ2NQW9biPxiwpX9zPi5m=kwvA16nHjK=Xu@mail.gmail.com>
2010-09-16 9:47 ` are fibrations evil? Thomas Streicher
2010-09-16 10:00 ` Prof. Peter Johnstone
[not found] ` <alpine.LRH.2.00.1009161023190.12162@siskin.dpmms.cam.ac.uk>
2010-09-16 10:46 ` Thomas Streicher
2010-09-17 7:44 ` Toby Bartels
[not found] ` <20100916094755.GA19976@mathematik.tu-darmstadt.de>
2010-09-17 5:01 ` Michael Shulman
2010-09-18 13:48 ` Thomas Streicher
[not found] ` <20100918134829.GB9467@mathematik.tu-darmstadt.de>
2010-09-20 16:25 ` Michael Shulman
2010-09-24 15:30 Is equality evil? Mattias Wikström
2010-09-25 0:16 Is equality evil? Fred E.J. Linton
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