Large cliques in extremal incidence configurations

Tuomas Orponen, Guangzeng Yi

Let $P\subset {\mathbb{R}}^2$ be a Katz-Tao $(\delta ,s)$-set, and let $\mathcal{L}$ be a Katz-Tao $(\delta ,t)$-set of lines in ${\mathbb{R}}^2$. A recent result of Fu and Ren gives a sharp…