From: Philippe Gaucher <gaucher@pps.jussieu.fr>
To: categories@mta.ca
Subject: Re: Quasi-categories
Date: Mon, 28 Nov 2005 08:06:08 +0100 [thread overview]
Message-ID: <200511280806.09112.gaucher@pps.jussieu.fr> (raw)
In-Reply-To: <E1EgXPb-0000RT-Pu@mailserv.mta.ca>
Le samedi 26 Novembre 2005 18:42, vous avez écrit :
> In answer to Carl Futia
>
> Charles Ehresmann has called such "gadgets" quasi-categories in
> "Introduction to the theory of structured categories" (Kansas 1966)
> reprinted in "Charles Ehresmann: Oeuvres completes et commentees" Part
> III-2.
>
> Sincerely
> Andree C. Ehresmann
Dear All,
One told me very recently that Joyal is writting a book about
"quasi-categories". But with a different meaning. A quasi-category is a
simplicial set satisfying a condition a little bit weaker than the Kan
condition. Morally speaking, two composable arrows have several possible
compositions, up to homotopy. I dont know whether Joyal reads this
mailing-list ?
pg.
prev parent reply other threads:[~2005-11-28 7:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-26 17:42 Quasi-categories Andree Ehresmann
2005-11-28 7:06 ` Philippe Gaucher [this message]
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