王萍华.Cpa空间中的非线性逼近[J].数学研究及应用,1993,13(1):139~142
Cpa空间中的非线性逼近
Non-linear Approximation in Cpa Spaces
投稿时间:1990-09-04  
DOI:10.3770/j.issn:1000-341X.1993.01.031
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作者单位
王萍华 南京师范大学数学系 
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英文摘要:
      In this paper, we establish the following Jackson and Bernstein inequalities for Cpa space:(?)where σ=(α+ (1/p)-1),α > 0,0 < p < ∞. Moreover, these inequalities are used to give characterizations of the approximation spaces resulted from two approximations verpectively by splines with free knots and approximation by rational functions.
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