该文利用集值映射的三种切上导数概念，给出了向量集值优化问题中严有效点的最优性条件。

In this paper, a few optimality conditions for strictly efficient points of set valued optimization are presented by using the concept of contingent derivatives of set valued mad.

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利用代数的方法获得了共点有限向量集的一类几何不等式 。

A research into the semi-norms on a finite-dimensional vector space;

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