A Note on Power-OTMs

Merlin Carl

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arXiv · 2412.03440

A Note on Power-OTMs

Merlin Carl

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Abstract

We consider the computational strength of Power-OTMs, i.e., ordinal Turing machines equipped with a power set operator, and study a notion of realizability based on these machines. When parameters are allowed, these machines are, modulo access to a global well-ordering, equivalent to the Set Register Machines defined by Robert Passmann in \cite{Passmann}, and while most of the results on the realizability of Power-OTMs are analogous to results obtained by Passmann, the settings lead to different results concerning the axiom of choice. As we will see, the computational strength of power-OTMs can, depending on the set-theoretical background, also differ from that of Set Register Machines.

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Merlin Carl. 2024-12-04. A Note on Power-OTMs. https://arxiv.org/abs/2412.03440

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