Approximation numbers in function spaces and the distribution of eigenvalues of some fractal elliptic operators Original Research Article

The aim of this paper is threefold. Firstly, we deal with approximation numbers of compact embeddingsBpps(Rn)↪Lp(μ), s>0, 10.Thirdly, we wish to demonstrate that the theory of subatomic wavelet frames in function spaces according to (Studia Math. 154 (2003) 59) is an efficient tool to handle problems of this and related type.