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Definability and definable groups in simple theories

Published online by Cambridge University Press:  12 March 2014

Anand Pillay*
Affiliation:
University of Illinois at Urbana-Champaign, Department of Mathematics, Altgeld Hall, 1409 West Green Street, Urbana, IL 61801, USA E-mail: [email protected]

Abstract

We continue the study of simple theories begun in [3] and [5]. We first find the right analogue of definability of types. We then develop the theory of generic types and stabilizers for groups definable in simple theories. The general ideology is that the role of formulas (or definability) in stable theories is replaced by partial types (or ∞-definability) in simple theories.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1998

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References

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