Traces for star products on symplectic manifolds
arXiv:math/0105089 · doi:10.1016/S0393-0440(01)00053-5
Abstract
We give a direct elementary proof of the existence of traces for arbitrary star products on a symplectic manifold. We follow the approach we used in \cite{refs:GuttRaw}, solving first the local problem. A normalisation introduced by Karabegov \cite{refs:Karabegov} makes the local solutions unique and allows them to be pieced together to solve the global problem.