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math.LO2014★ 3 cited
A Fitting Theorem for Simple Theories
Daniel Palacin, Frank Olaf Wagner
The Fitting subgroup of a type-definable group in a simple theory is relatively definable and nilpotent. Moreover, the Fitting subgroup of a supersimple hyperdefinable group has a…
math.LO2014
Approximate subgroups
Jean-Cyrille Massicot, Frank Olaf Wagner
Given a definably amenable approximate subgroup of a (local) group in some first-order structure, there is a type-definable subgroup normalised by and contained in $A^4…