On interpretability in theories containing arithmetic
Marie Hájková, Petr Hájek (1972)
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Marie Hájková, Petr Hájek (1972)
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Andrzej Mostowski (1953)
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We define a recursive theory which axiomatizes a class of models of IΔ₀ + Ω ₃ + ¬ exp all of which share two features: firstly, the set of Δ₀ definable elements of the model is majorized by the set of elements definable by Δ₀ formulae of fixed complexity; secondly, Σ₁ truth about the model is recursively reducible to the set of true Σ₁ formulae of fixed complexity.
G. Kreisel, Hao Wang (1958)
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R. L. Goodstein (1968)
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S. Feferman (1960)
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Franco Parlamento (1981)
Rendiconti del Seminario Matematico della Università di Padova
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Aldo Ursini (1977)
Rendiconti del Seminario Matematico della Università di Padova
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