Embeddings of weighted Sobolev spaces and degenerate elliptic problems
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摘要:
New embeddings of some weighted Sobolev spaces with weights a(x) and b(x) are established.The weights a(x) and b(x) can be singular.Some applications of these embeddings to a class of degenerate elliptic problems of the form-div(a(x)▽u) =b(x)f(x,u) in Ω,u =0 on (a)Ω,where Ω is a bounded or unbounded domain in RN,N ≥ 2,are presented.The main results of this paper also give some generalizations of the well-known Caffarelli-Kohn-Nirenberg inequality.