From: Thomas Streicher <streicher@mathematik.tu-darmstadt.de>
To: Andrej Bauer <andrej.bauer@andrej.com>
Cc: James Lipton <jlipton@wesleyan.edu>, Categories <categories@mta.ca>
Subject: Re: size_question
Date: Sat, 2 Jul 2011 22:05:05 +0200 [thread overview]
Message-ID: <E1QdMPY-0007bS-Mz@mlist.mta.ca> (raw)
In-Reply-To: <E1Qd4sZ-0005Ry-Sj@mlist.mta.ca>
> I should think that the hereditarily finite sets do not depend all
> that much on the background setting. After all, there are not very
> many of them and they are quite concrete. Can they really be hugely
> different depending on whether we work in ZF, ZFC, IZF, CZF etc?
If we are not working classically subsets of finite sets need not be
finite but the sets in V_\omega are closed under subsets.
Thomas
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next prev parent reply other threads:[~2011-07-02 20:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-28 17:39 size_question Eduardo Dubuc
2011-06-29 2:43 ` size_question James Lipton
2011-07-02 12:24 ` size_question Andrej Bauer
2011-07-02 20:05 ` Thomas Streicher [this message]
2011-07-03 15:01 ` size_question F. William Lawvere
2011-06-29 7:01 ` size_question Gaucher Philippe
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