2 problems

Let $\Gamma$ be a set of $L$ irreducible algebraic curves in $\mathbb{C}^n$, each of degree at most $d$, and let $P_2(\Gamma)$ denote the set of points incident to at least two cur…

Let $\frak L$ be a set of $L$ lines in $\mathbb{C}^n$, and let $P_2(\frak L)$ denote the set of points incident to at least two lines of $\frak L$. Higher-dimensional doubly ruled…