摘要
将一维随机变量的性质ｆ（Ｅξ）≤Ｅｆ（ξ），（ｆ（ｘ）为凸函数）推广到多维，以此统一推广了一类重要的不等式，对一个非凹凸函数给出了相关的不等式．
This article popularizes the single-dimensional random variable f≤Ef(ξ)(f(x) as convex and concave function into the multi-dimentional scope;therefore concludes a series of important inequalties esp,to convex and concave functions.
出处
《青岛建筑工程学院学报》
1997年第4期86-91,共6页
Journal of Qingdao Institute of Architecture and Engineering
关键词
数学期望
凹凸函数
正负定
主子式
mathematical expectation,convex and concave functions,positive and negative definite forms,principal minor
