On $(\le k)$-edges, crossings, and halving lines of geometric drawings of $K_n$

Bernardo M. Ábrego, Mario Cetina, Silvia Fernández-Merchant +2

Let $P$ be a set of points in general position in the plane. Join all pairs of points in $P$ with straight line segments. The number of segment-crossings in such a drawing, denoted…