上海大学学报(自然科学版)

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凸体的n-j维截面函数的性质及应用

汪卫,何斌吾   

  1. 上海大学 理学院,上海 200444
  • 收稿日期:2006-06-26 修回日期:1900-01-01 出版日期:2007-04-30 发布日期:2007-04-30
  • 通讯作者: 何斌吾

Properties and Applications of n-j-Dimensional Section Function of Convex Bodies

WANG Wei,HE Bin-wu   

  1. School of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2006-06-26 Revised:1900-01-01 Online:2007-04-30 Published:2007-04-30
  • Contact: HE Bin-wu

摘要: 截面函数在凸分析中扮演着重要的角色.类似于n-1维截面函数,该文证明凸体的n-j 维截面函数是对数凹函数,研究与其有关的性质,并给出一些应用.

关键词: n-j维截面函数, 对数凹函数, 凸体

Abstract: The section function is important in convex analysis. Analogous to the n-1-dimensional section function, we show that the n-j-dimensional section fun ction is a log-concave function. Its properties are studied and some applications are presented.

Key words: log-concave function, n-j-dimensional section function, convex body

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