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Article #202

Re: Non-standard integers.

#202
From: Robert M. Solovay
Date: Mon, 17 Aug 1992 08:57
17 lines
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In article <1992Aug17.141017.373@csc.canterbury.ac.nz> wft@math.canterbury.ac.nz (Bill Taylor) writes:
>I recall once seeing an article by Kemeny, in which he looked at a nonstandard
>model of the integers, in which there would be two (nonstandard) integers,
>n and n+2, both of which would be divisible by all standard integers. The
>hope was to be able to use this model to decide the twin-prime (or related)
>conjectures.
>
If the integer n is divisible by 4, then n + 2 is not. This fact
[obviously true in the standard model] can be proved in PA, and so
holds in non-standard models as well. 

It's a reasonable question (to which I don't know the answer) what the
result of Kemeny is that wft is misremembering.
>
>Thanks,      Bill Taylor.         wft@math.canterbury.ac.nz

Bob Solovay solovay@math.berkeley.edu
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References: <1992Aug17.141017.373@csc.canterbury.ac.nz>

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Path: arc1-ca.pugleaf.net!sparky!uunet!sun-barr!ames!agate!math.berkeley.edu!solovay
From: solovay@math.berkeley.edu (Robert M. Solovay)
Newsgroups: sci.logic
Subject: Re: Non-standard integers.
Date: 17 Aug 1992 08:57:03 GMT
Organization: U.C. Berkeley Math. Department.
Lines: 17
Distribution: world
Message-ID: <16npkvINNjlq@agate.berkeley.edu>
References: <1992Aug17.141017.373@csc.canterbury.ac.nz>
NNTP-Posting-Host: math.berkeley.edu
Summary: Result quoted is false