Abstract:
For a domain $G\subset \mathbb R^n$ with an anisotropic peak, we construct integral representations of functions in terms of derivatives and establish conditions for the embedding $W_p^s(G)\subset L_q(G)$ of the Sobolev space in the Lebesgue space for $1\leq p<q\le \infty $.
Keywords:Sobolev space, domain with a peak, embedding theorem.
Citation:
O. V. Besov, “Conditions for Embeddings of Sobolev Spaces on a Domain with Anisotropic Peak”, Approximation Theory, Functional Analysis, and Applications, Collected papers. On the occasion of the 70th birthday of Academician Boris Sergeevich Kashin, Trudy Mat. Inst. Steklova, 319, Steklov Math. Inst., Moscow, 2022, 51–63; Proc. Steklov Inst. Math., 319 (2022), 43–55