平面上对合透视对应的代数表达式

Algebraic Expression of the Involutry Perspestive in Plane

关于一维空间上对合透视对应的代数形式在一般的《射影几何》教科书中都有讨论,而对二维形式讨论甚少,在文[1]中仅给出了一种特殊情况.本文讨论了二维空间上对合透视对应的代数表达式,并在最后给出了它的结果包含了[1]中的特殊情况.

The algebraic form of involutory perspective in one-dimensional space has been discussed in almost all the textbooks 'Higer Geometry'. However in two-dimensional space it is discussed very little. Only a special case is introduced in the paper(1).In this paper we discuss the algebraic expession of involutory perspective in two-dimensional space, and we get a result which contains the special case in the paper(1).