ON THE K-FUNCTIONAL IN THE SOBOLEV SPACES

ON THE K-FUNCTIONAL IN THE SOBOLEV SPACES

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摘要 This letter extends the K-functional given by Johnen (Lecture Notes in Math., 571 (1977)) so that it may be applied to the study of simultaneous approximation of functions and their partial derivatives.

作者杨义群

机构地区 Zhejiang Agriculture University

出处《Chinese Science Bulletin》 SCIE EI CAS 1984年第1期138-139,共2页

关键词 SIMULTANEOUS LETTER NOTES 丁城邵石成口云叶

分类号 O1 [理学—基础数学]

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Chinese Science Bulletin

1984年第1期

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ON THE K-FUNCTIONAL IN THE SOBOLEV SPACES

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