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On the prime model property
Authors:Ludomir Newelski
Institution:Mathematical Institute, Polish Academy of Sciences, ul.Kopernika 18, 51-617 Wroclaw, Poland
Abstract:Assume $T$ is superstable, $\Phi (x)$ is a formula over $\emptyset $, $Q=\Phi (M^*)$ is countable and $K_Q=\{M: M$ is countable and $\Phi (M)=Q\}$. We investigate models in $K_Q$ assuming $K_Q$ has the prime model property. We prove some corollaries on the number of models in $K_Q$. We show an example of an $\omega $-stable $T$ and $Q$ with $K_Q$ having exactly 3 models.

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