Local solvability of second order differential operators with double characteristics I: Necessary conditions

Abstract

This is a the first in a series of two articles devoted to the question of local solvability of doubly characteristic second order differential operators. Consider doubly characteristic differential operators of the form

Cite this paper

@inproceedings{Mller2005LocalSO, title={Local solvability of second order differential operators with double characteristics I: Necessary conditions}, author={Detlef M{\"{u}ller}, year={2005} }