On Boundary Value Problems for Elliptic Equations Degenerating on the Boundary
Akira Nakaoka · Publications of the Research Institute for Mathematical Sciences · 1971
in SCR, where & is an interior or, an exterior of a smooth 'and compact hypersurface, is a complex number and p(x) is a realvalued function satisfying (1) p(#) is continuous and 0<Jp(:*;)<JM on S (2) pOO vanishes only on the boundary of J2, which we denote it by T (3) p(#) depends only on r = r(x the distance from x^S to F in some neighbourhood of F (4) for small r, there exist two constants A and A^ such that