利用控制不等式理论证明一类算子凸序列不等式，把凸序列不等式推广到算子。
In this paper we prove a class of operator convex sequences inequality by means of the theory of majorization.
利用控制不等式理论证明一类算子凸序列不等式，把凸序列不等式推广到算子。
An inequality for convex sequence is proved by means of the control theory, Moreover the inequality established in is generalized.
第二个算法不断删去多边形的凹点及新产生的凹点，最后得到凸壳顶点序列。
The second algorithm is that polygonal concave points and newly created concave points are continuously removed, and a vertex sequence of the convex hull is finally obtained.
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