Re: what makes it true?
- From: Torkel Franzen <torkel@xxxxxxxxxx>
- Date: 06 Sep 2005 13:02:44 +0200
Timothy Little <tim-usenet@xxxxxxxxxxxxxxxxxx> writes:
> > Then we would know that GC was true.
>
> Even though some model of the natural numbers may contain an even
> number greater than two that is not a sum of two primes?
> Which model do you take as the *real* one?
All models (of PA or some other theory, not of "the natural
numbers") are of course equally real. What does this have to do with
the observation - which is a simple mathematical theorem - that if GC
is undecidable in PA (or in the much weaker theory Q), it is true?
.
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