AVERAGE σ-K WIDTH OF CLASS OF L_p(R^n) IN L_q (R^n)
AVERAGE σ-K WIDTH OF CLASS OF L_p(R￣n) IN L_q (R￣n)作者机构：BEIJING NORMAL UNIVDEPT MATHBEIJING 100875PEOPLES R CHINA
出 版 物：《Chinese Annals of Mathematics,Series B》 (数学年刊（B辑英文版）)
年 卷 期：1995年第16卷第3期
页 面：351-360页
核心收录：
学科分类：07[理学] 070104[理学-应用数学] 0701[理学-数学]
主 题：Average σ-K width Optimal subspace,Sobolev-Wiener class,Riesz potential.
摘 要：The average σ-K width of the Sobolev-Wiener class in Lq(Rn) is studied for and the asymptotic behaviour of this quantity is determined. The exact value of average σ-K width of some class of smooth functions in L2(Rn) is obtained.
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