库鲁巴定理的延伸

THE EXTENSION OF KRUPPAS THEOREM

本文通过对库鲁巴定理的分析，采用几何方法得出了图形Φ为空间给定仿射坐标系中心投影的充要条件．

Based on the analysis of Kruppas theorem and geometric methods sufficient and necessary conditions that figure Φ is a central projection of the space affine coordinate system are put forward in this paper. It can fit any situation of the central projection of affine coordinate systems as well as its affine correspondents.