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Preprint Number 416
416. Pinar Ugurlu
Pseudofinite groups as fixed points in simple groups of finite Morley rank
Submission date: 30 January 2012.
We prove that if the group of fixed points of a generic automorphism of a simple group of finite Morley rank is pseudofinite, then this group is an extension of a (twisted) Chevalley group over a pseudofinite field. On the way to obtain this result, we classify non-abelian definably simple pseudofinite groups of finite centralizer dimension (using the ideas of John S. Wilson).
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