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蝴蝶定理的射影证明及其推广
Projective Proof and Extension of Butterfly Theorem
【摘要】 本文利用射影几何的理论,采用了四种不同的方法,对蝴蝶定理进行了证明,并给出了仿射的和射影的若干推广.
【Abstract】 In this paper, by using projective geometry theory,we have separately proved Butterfly Theorem with four different methodes, ang have extended it to affine and projective geometry.
【关键词】 蝴蝶定理;
正交变换;
射影性质;
交比;
对合;
【Key words】 Butterfly Theorem; Orthogonal transformation; projective property; cross ratio; involution;
【Key words】 Butterfly Theorem; Orthogonal transformation; projective property; cross ratio; involution;
- 【文献出处】 洛阳师专学报 , 编辑部邮箱 ,1996年05期
- 【分类号】O185
- 【被引频次】1
- 【下载频次】200