Sasa Kocic
Reducibility of skew-product systems with multidimensional Brjuno base flows
(89K, LaTeX )

ABSTRACT.  We develop a renormalization method that applies to the problem of the local reducibility of analytic skew-product flows on T^d x SL(2,R). We apply the method to give a proof of a reducibility theorem for these flows with Brjuno base frequency vectors.