Empty red-red-blue triangles

Abstract

Let $P$ be a $2n$-point set in the plane that is in general position. We prove that every red-blue bipartition of $P$ into $R$ and $B$ with $|R|=|B|=n$ generates $\hat{I}\text{c◯}(n^{3/2})$ red-red-blue empty triangles.

9 pages, 3 figures