Moments of a Wishart Matrix

The paper discusses the moments of Wishart matrices, in both central and noncentral cases. first part shows that expectation map has certain homogeneity equivariance properties which impose considerable structure on moments, hitherto unrecognised. second explains how may be computed efficiently. two parts are completely independent, but computations produce precisely algebraic predicted part, as well reproducing all previously known formulae. A number examples given for more manageable