Elements of Function Spaces
摘要
Chapter 5 is a brief introduction to function spaces such as Hölder, Sobolev and Besov spaces. We treat the following function spaces that enter naturally in connection with elliptic boundary value problems: In particular, we formulate the imbedding characteristics of Sobolev spaces and the Rellich–Kondrachov compactness theorem for Sobolev spaces that render these spaces so useful in the study of elliptic boundary value problems. It should be emphasized that Triebel (1983) and Franke–Runst (1995) studied regular elliptic boundary value problems in the framework of Besov spaces \(B^{s}_{p,q}\) and Triebel–Lizorkin spaces \(F^{s}_{p,q}\) .