a Department of Mathematics, University of La Rochelle, av. M. Crépeau, 17 000 La Rochelle, France b Department of Mathematics, Radboud University Nijmegen (RUN), Postbus 9010, 6500 GL Nijmegen, The Netherlands
Abstract:
It is well-known that an element of the linear group is semisimple if and only if its conjugacy class is Zariski closed. The aim of this paper is to show that the same result holds for the group of complex plane polynomial automorphisms.