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Number of constructive homogeneous models of a complete decidable theory - MaRDI portal

Number of constructive homogeneous models of a complete decidable theory (Q792316)

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scientific article; zbMATH DE number 3853048
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Number of constructive homogeneous models of a complete decidable theory
scientific article; zbMATH DE number 3853048

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    Number of constructive homogeneous models of a complete decidable theory (English)
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    1984
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    A countable model M is called strongly constructivizable if under some presentation \(\nu:\omega \to M,\) the complete diagram of M becomes decidable. For every \(m\leq n\leq \omega\) a complete, decidable theory \(T_{n,m}\) is (uniformly) constructed. The signature of \(T_{n,m}\) consists of infinite families of unary and binary predicates. It is shown that \(T_{n,m}\) has exactly n strongly constructivizable models and exactly m of them are homogeneous. The nonhomogeneous models of \(T_{n,m}\) have no constructive homogeneous elementary extensions.
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    constructive models
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    homogeneous models
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    constructivizable models
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