Remarks on orthocenters, Pappus' theorem and Butterfly theorems

被引：0

作者：

Fritsch, Rudolf ^{[1
]}

机构：

[1] Ludwig Maximilians Univ Munchen, Math Inst, Theresienstr 39, D-80333 Munich, Germany

来源：

JOURNAL OF GEOMETRY | 2016年 / 107卷 / 02期

关键词：

Orthocenter; Pappus' theorem; Butterfly theorem;

D O I：

10.1007/s00022-015-0304-0

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We present a generalization of the notion of the orthocenter of a triangle and of Pappus' theorem. Both subjects were discussed with Pickert in the last year of his life. Furthermore we add a projective Butterfly theorem which covers all known affine cases.

引用

页码：305 / 316

页数：12

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