%0 Journal Article
%T On distinct cross-ratios in positive characteristic
%A Misha Rudnev
%J Mathematics
%D 2015
%I arXiv
%X We prove that a finite subset $A$ of the projective line $FP^1$ over a field $F$ of positive characteristic $p$ determines $\Omega(|A|^2)$ distinct cross-ratios, as long as $|A|<\sqrt{p}.$
%U http://arxiv.org/abs/1508.05142v5