本文获得了一类关于度量加单形的体积和外接超球半径的几何不等式，作为其应用，给出了一些重要的推论。
Some geometric inequalities on metric addition simplex which volume and radius of circumscribed sphere are obtained. As its application, some important corollaries are given.
作为应用还给出了涉及单形的体积、外接超球半径和中线的不等式的稳定性型式。
In application, the author also gives the stability versions of the inequalities concerning the volume, circumradius and median of ann-simplex.
通过依次抽取外接凸多边形，将凹多边形表达为仅由凸多边形组成的多层拓扑结构。
Next, by extracting convex polygons consecutively, the noconvex polygon is described as topological structure made of convex polygons at defferent layers.
基于平面模板摄像机自标定的新算法，利用正六边形的特性，给出了一种精确求解其外接圆圆心的巧妙方法。
In this paper, we discuss a new method for camera self-calibration based on a plane pattern of equilateral-dodecagon.
基于平面模板摄像机自标定的新算法，利用正六边形的特性，给出了一种精确求解其外接圆圆心的巧妙方法。
In this paper, we discuss a new method for camera self-calibration based on a plane pattern of equilateral-dodecagon.
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