ON RADIAL SOLUTION FOR SOME ELLIPTIC EQUATIONS INVOLVING OPERATORS WITH UNBOUNDED COEFFICIENTS IN EXTERIOR DOMAINS

We study existence and multiplicity of radial solutions for some quasilinear elliptic problems involving the operator LN = Delta - x center dot V on RN \ B1, where Delta is the Laplacian, x center dot V is an unbounded drift term, N > 3 and B1 is the unit