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Computability models over categories

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arxiv 2105.06933 v1 pith:TFJE6N7D submitted 2021-05-14 math.CT

classification math.CT
keywords computabilitycategoriesmodelscanonicalcategorymodelnotionsthem
verification ladder T0 review T1 audit T2 compute T3 formal

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Generalising slightly the notions of a strict computability model and of a simulation between them, which were elaborated by Longley and Normann, we define canonical computability models over categories and appropriate Set-valued functors on them. We study the canonical total computability model over a category, and the partial one over a category with pullbacks. Our notions and results are generalised to categories with a base of computability, connecting Rosolini's theory of dominions with the theory of computability models.

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