(1) Dipartimento di Matematica, Università di Pisa, Via F. Buonarroti, 2, 1-56127 Pisa, Italy;(2) Department of Information Mathematics, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, 182-8585 Tokyo, Japan
Abstract:
This article is devoted to the study of the Cauchy problem in Gevrey classes for some higher order weakly hyperbolic equations with time-dependent coefficients and without lower order terms.