Resumen de A note on the invariant subspace problem relative to a type II1 factor

Junsheng Fang, Don Hadwin

• In this paper we prove that every operator in an ultrapower algebra of a type II1 factor has a continuous family of invariant subspaces. We also show that an ultrapower algebra of the hyperfinite type II1 factor is not *-isomorphic to an ultraproduct of matrix algebras.