Mei-Chu Chang,
Jozsef Solymosi
(2007)
In this paper we prove the following
theorems in incidence geometry. 1. There is such that for any , and , if there are many distinct lines between and for all , , then are collinear. If the number of the distinct lines is then the cross ratio of the four points is algebraic.
2. Given , there is such that for any noncollinear, and , if there are many
distinct lines between and for all , , then for any
, we have
distinct lines between and .
3. Given...