Published online by Cambridge University Press: 24 October 2008
In this paper we shall prove an existence theorem and give applications of an outgoing solution of the following problem:
where L(x, x) is a second order elliptic differential operator with a potential term q(x),is an exterior domain of ℝn (where n2) with the C2-class boundary , k is an element of the complex plane or of a logarithmic Riemann surface, and B is either a Dirichlet boundary condition or of the form Bu = vj(x) ajk(x) ku + (x)u with the unit outer normal vector v(x) = (vl,, vn) at x.