From: Wilkins E B <elwood@essex.ac.uk>
To: categories@mta.ca
Subject: Re: Category Theory and Hereditarily-Finite Sets
Date: Thu, 19 Apr 2001 22:19:46 +0100 [thread overview]
Message-ID: <3ADF5672.F53C9735@essex.ac.uk> (raw)
In-Reply-To: <200104191829.TAA04249@koi-pc.dcs.qmw.ac.uk>
Paul Taylor wrote:
> > Hereditarily-finite sets are becoming increasingly more popular
> > in computer science research.
>
> Why? Because some ill-advised first year maths lecturer told you that
> the element relation was the foundation of mathematics, maybe?
Maybe because someone read papers by Friedman (1977) which gave the set
theory B which is [Beeson] "the theory of hereditary extensional sets of
finite rank" and which is strong enough to model Bishop-style constructive
mathematics. This seems to be a good reason.
Elwood
--
Dr Elwood Wilkins tel: (+44) (0)1206 872771
Senior Research Officer fax: (+44) (0)1206 872788
Department of Computer Science
University of Essex, Colchester, Essex, UK
next prev parent reply other threads:[~2001-04-19 21:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-19 18:29 Paul Taylor
2001-04-19 21:19 ` Wilkins E B [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-04-18 23:50 Galchin Vasili
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