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Preprint Number 505
505. Joseph Flenner and Vincent Guingona
Convexly Orderable groups and valued fields
Submission date: 1 October 2012.
We consider the model theoretic notion of convex orderability, which fits strictly between the notions of VC-minimality and dp-minimality. In some classes of algebraic theories, however, we show that convex orderability and VC-minimality are equivalent, and use this to give a complete classification of VC-minimal theories of ordered groups and abelian groups. Consequences for fields are also considered, including a necessary condition for a theory of valued fields to be quasi-VC-minimal. For example, the p-adics are not quasi-VC-minimal.
Mathematics Subject Classification: 03C45, 03C60, 03C64
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