taxonomic hierachy

Application of the hierarchy classification to point cloud of airborne LIDAR;

机载激光雷达点云的阶层式分类

Product design based on the principle of category classification;

运用阶层类别分析法指导产品设计

This paper discusses the relation beween order classification and isomorphic classification, gives some important characteristic properties of a cyclic group with order n and a important property of a p-group with finite order, introduces two factorization method of direct product for commutative p-group with finite order, presents some new problems.

讨论了阶分类与同构分类的关系,给出了n阶循环群的几个重要的特征性质和有限p-群的一个重要性质,介绍了有限交换p-群直积分解的两种方法,提出了一些新的问题。