| 逼近论中的宽度问题 |
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| 引用本文： | 李颖,陈宗福,李丽红.逼近论中的宽度问题[J].河北理工学院学报,2008(3). |
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| 作者姓名： | 李颖 陈宗福 李丽红 |
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| 作者单位： | 河北理工大学理学院;湄州湾职业技术学院; |
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| 摘 要： | 主要根据几种宽度定义提出对应的实例,讨论了周期函数Besov函数类的逼近问题,并简单介绍宽度的发展。
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| 关 键 词： | Besov函数类 N—宽度 各向同性 |
On Approximation Theory of Width Problem |
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| LI Ying CHEN Zong-fu LI Li-hong.On Approximation Theory of Width Problem[J].Journal of Hebei Institute of Technology,2008(3). |
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| Authors: | LI Ying CHEN Zong-fu LI Li-hong |
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| Institution: | LI Ying~1 CHEN Zong-fu~2 LI Li-hong~1 (1.College of Science,Hebei Polytechnic University,Tangshan Hebei 063009,China 2.Meizhouwan Vocational & Technical College,Meizhouwan Fujian 351254,China) |
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| Abstract: | In this paper the several definitions of n-width are introduced.Based on which the authors present some new examples of each definition.Further more the approximation problem on periodic functions of Besov is discussed in detail.Finaly,the authors introduce the development of N-widths in brief. |
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| Keywords: | Besov class of functions N-width isotropic |
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