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Preprint Number 2043
2043. Atticus Stonestrom Some model theory of Th(ℕ,·) E-mail: Submission date: 2 September 2021 Abstract: 'Skolem arithmetic' is the complete theory T of the multiplicative monoid (ℕ, ·). We give a full characterization of the &empy;-definable stably embedded sets of T, showing in particular that, up to the relation of having the same definable closure, there is only one non-trivial one: the set of squarefree elements. We then prove that T has weak elimination of imaginaries but not elimination of finite imaginaries. Mathematics Subject Classification: Keywords and phrases: |
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