Remembering earlier -approximation theorems of H. Beckert and the authors such approximations are studied in the uniform sense along a surface , which is lying in the interior of the domain of a boundary value problem of a linear elliptic differential equation of second order, having eigen-solutions in the domain bounded by .
Cite this article
Alfred Göpfert, Gert Wanka, Johanna Wanka, Approximation durch Lösungen partieller Differentialgleichungen. Z. Anal. Anwend. 4 (1985), no. 4, pp. 291–303