Cl-determinacy of weighted homogeneous germs

Abstract

We provide new estimates on the degree of Cl-G-determinacy (G is one of Mather’s groups R, C, or K) of weighted homogeneous map germs satisfying a convenient Lojasiewicz condition. The results give an explicit order such that the Cl geometrical structure of a weighted homogeneous polynomial map-germ is preserved after higher order perturbations. As an application of our results, we use the degree of C1-determinacy and the Newton diagram to obtain equisingular deformations in the Briançon-Speder example. © 1997 by the University of Notre Dame. All rights reserved.