On perturbations of Hilbert spaces and probability algebras with a generic automorphism
arXiv:0810.4086 · doi:10.4115/jla.2009.1.7
Abstract
We prove that , the theory of infinite dimensional Hilbert spaces equipped with a generic automorphism, is -stable up to perturbation of the automorphism, and admits prime models up to perturbation over any set. Similarly, , the theory of atomless probability algebras equipped with a generic automorphism is -stable up to perturbation. However, not allowing perturbation it is not even superstable.