上海大学学报(自然科学版)

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Bpn 的迷向常数及其渐近性质

薛莲1,2, 陈巧云1,3, 何斌吾1   

  1. 1.上海大学 理学院,上海 200444;2.南通大学 理学院,江苏 南通 226001; 3.丽水学院 数学系,浙江 丽水 323000

  • 收稿日期:2007-01-17 修回日期:1900-01-01 出版日期:2008-06-30 发布日期:2008-06-30
  • 通讯作者: 何斌吾

Isotropic Constant of Bpn and Its Asymptotic Properties

XUE Lian1,2, CHEN Qiao-yun1,3, HE Bin-wu1   

  1. 1.College of Sciences, Shanghai University, Shanghai 200444, China;
    2.College of Sciences, Nantong University, Nantong 226001, Jiangsu, China;
    3.Department of Mathematics, Lishui University, Lishui 323000, Zhejiang, China
  • Received:2007-01-17 Revised:1900-01-01 Online:2008-06-30 Published:2008-06-30
  • Contact: HE Bin-wu

摘要: Bpn={x∈Rn | ‖x‖p≤1}是n维赋范空间 lpn 中的单位球.该文证明当1≤p≤∞时,Bpn是迷向的凸体,并给出了Bpn的迷向常数公式,进一步得到当n→∞和p→∞时其迷向常数的渐近性质.

关键词: 单位球, 赋范空间, 渐近性质
,
迷向常数

Abstract: Let Bpn={x∈Rn | ‖x‖p≤1} be a unit ball of n-dimension normed space lpn. It is shown that Bpn is isotropic convex body if 1≤p≤∞, and the isotropic constant formula of Bpn is given.Moreover, asymptotic properties of isotropic constant of Bpn is obtained as n→∞ and p→∞

Key words: asymptotic properties, isotropic constant, normed space, unit ball

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