%0 Journal Article
%T Characteristic boundary value problems: estimates from H1 to L2
%A Alessandro Morando
%A Paolo Secchi
%A Paola Trebeschi
%J Mathematics
%D 2013
%I arXiv
%X Motivated by the study of certain non linear free-boundary value problems for hyperbolic systems of partial differential equations arising in Magneto-Hydrodynamics, in this paper we show that an a priori estimate of the solution to certain boundary value problems, in the conormal Sobolev space H1_tan, can be transformed into an L2 a priori estimate of the same problem.
%U http://arxiv.org/abs/1309.6448v1