摘要
Clifford定理的证明难度较大,尤其用初等几何学的方法来证明难度更大,至今没有发现一个较完整的用初等几何学的方法证明这一定理。文章利用实交比值引理给出了当n=4,5时的Clifford定理的证明。
This paper is a part of the author＇s master thesis at Oslo University. It is going to proof Clifford chain theorem for 4,5 general lines in the plane by using the real cross ratio lemma.
