Highly incidental patterns on a quadratic hypersurface in ${\mathbb{R}}^4$

Noam Solomon, Ruixiang Zhang

In [Sharir and Solomon 2015], Sharir and Solomon showed that the number of incidences between $m$ distinct points and $n$ distinct lines in ${\mathbb{R}}^4$ is $$O^*\left(m^{2/5}n^{4/…