在此基础上，根据递减绝对风险规避者的效用函数集合的特征，分析并证明其决策准则，给出定理4、定理5。
According to characteristics of the decreasing absolute risk averter's utility functions, the paper analyzes and proves its decision rules, gives the theorem 4 and theorem 5.
在实时图像分割的过程中，利用特征函数实现图像坐标集合划分简便快捷。
In the process of the real-time image partition, using the eigenfunction to realize the partition of image coordinate set is very convenient and easy.
利用集合的表示函数、支撑函数、距离函数和投影等研究闭凸体的典范表示及点到边界的投影特征。
Some relationships among the support function and indicator function of a convex set and their second-order epi-derivatives are given.
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