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Is the Halting problem effectively solvable non-algorithmically, and is the Goedel sentence in NP, but not in P?

Bhupinder Singh Anand
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Abstract

We consider the thesis that an arithmetical relation, which holds for any, given, assignment of natural numbers to its free variables, is Turing-decidable if, and only if, it is the standard representation of a PA-provable formula. We show that, classically, such a thesis is, both, unverifiable and irrefutable, and, that it implies the Turing Thesis is false; that Goedel's arithmetical predicate R(x), treated as a Boolean function, is in the complexity class NP, but not in P; and that the Halting problem is effectively solvable, albeit not algorithmically.

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Bhupinder Singh Anand. 2005-06-07. Is the Halting problem effectively solvable non-algorithmically, and is the Goedel sentence in NP, but not in P?. https://arxiv.org/abs/math/0506126

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