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Simple Crystal Forms As the Orbits of Crystallographic Symmetry Groups

机译:简单晶体形式作为晶体对称群的轨道

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摘要

Simple crystal forms are analyzed as the orbits of point symmetry groups on a set of crystal planes of space. All known polyhedra are described and structurized based on the theory of the orbits of groups, which provided a new, more harmonious approach to this problem. The orbits of groups can be general or particular and characteristic or non-characteristic. All possible versions of all crystallographic groups are listed in the table. The problem of the equivalence of polyhedra as the orbits of point symmetry groups is considered. An analysis of this problem has shown that 32 point crystallographic symmetry groups correspond to 139 symmetrically nonequivalent polyhedra.
机译:将简单的晶体形式分析为一组空间晶体平面上的点对称组的轨道。基于群轨道理论对所有已知的多面体进行了描述和结构化,从而为该问题提供了一种新的,更和谐的方法。群的轨道可以是一般的或特定的,并且可以是特征的或非特征的。表中列出了所有晶体学基团的所有可能版本。考虑了多面体作为点对称群轨道的等价性问题。对这个问题的分析表明,32个点的晶体对称基团对应于139个对称的非等价多面体。

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