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NeumannBessel级数的收敛性

孙 毅, 杨 荣, 张旭利   

  1. 吉林大学 数学学院, 长春 130012
  • 收稿日期:2007-05-28 修回日期:1900-01-01 出版日期:2008-03-26 发布日期:2008-03-26
  • 通讯作者: 孙 毅

Convergence Properties of NeumannBessel Series

SUN Yi, YANG Rong, ZHANG Xuli   

  1. College of Mathematics, Jilin University, Changchun 130012, China
  • Received:2007-05-28 Revised:1900-01-01 Online:2008-03-26 Published:2008-03-26
  • Contact: SUN Yi

摘要: 由NeumannBessel积分算子的核函数Kn(z,ξ)出发, 构造一种Bernstein型核Mn(z,ξ),并证明了带有新核的积分算子在单位圆周Γ((|z|=1)上一致地收敛到每个连续函数f(z),且具有最佳收敛阶.

关键词: NeumannBessel级数, 核函数, 一致收敛, 最佳收敛阶

Abstract: We constructed a kernel Mn(z,ξ) of Bernsteintype based on kernel function Kn(z,ξ) of NeumannBessel integral operator. The integral operator with the new kernel converges to any continuous functionf(z) on the unit circle Γ((|z|=1)uniformly, and has the best approximation order.

Key words: NeumannBessel series, kernel functions, uniformly convergent, best approximation order

中图分类号: 

  • O174.41