2 papers
math.OA2005
Amenability, completely bounded projections, dynamical systems and smooth orbits
Daniel Beltiţă, Bebe Prunaru
We describe a general method to construct completely bounded idempotent mappings on operator spaces, starting from amenable semigroups of completely bounded mappings. We then explo…
math.DG2004
Integrability of almost complex structures on Banach manifolds
Daniel Beltiţă
We prove that the classical integrability condition for almost complex structures on finite-dimensional smooth manifolds also works in infinite dimensions in the case of almost com…