Generalized Hyperfocused Arcs in $PG(2,p)$

A. Blokhuis, G. Marino, F. Mazzocca

A {\em generalized hyperfocused arc} $\mathcal{H}$ in $PG(2,q)$ is an arc of size $k$ with the property that the $k(k-1)/2$ secants can be blocked by a set of $k-1$ points not belo…