[FOM] inconsistency of P
friedman at math.ohio-state.edu
Sat Oct 1 12:00:54 EDT 2011
On Oct 1, 2011, at 8:36 AM, Edward Nelson wrote:
> The consistency of P remains an open problem.
As I indicated before on the FOM, there is a proof that any given
finite fragment of PA is consistent, using "every infinite sequence of
rationals in [0,1] has an infinite Cauchy 1/n subsequence".
Does this at least answer the question of whether PRA or even, say, 3
quantifier induction, is consistent?
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