The main focus of this paper is on study of s‐numbers for a higher order Sobolev embedding on an interval and also for the corresponding Hardy‐type operator. Upper and lower estimates for approximation and Bernstein numbers are described and their relations with results for lower order Sobolev embeddings are discussed.

中文翻译：

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关于4阶Sobolev类型嵌入和高阶积分算子s数的注释

本文的主要重点是研究区间上的高阶Sobolev嵌入的s数以及相应的Hardy型算子。描述了近似值和Bernstein数的上下估计值，并讨论了它们与低阶Sobolev嵌入结果的关系。