2 problems

Let a hyperplane arrangement be given, and let a $(4,d)$-multinet be a multinet with four classes and degree $d$. Yuzvinsky's uniqueness conjecture. The only $(4,d)$-multinet on a…

Let $c\mathcal{A}$ be the cone over a real line arrangement $\mathcal{A}$, and suppose that $c\mathcal{A}$ is a simplicial arrangement. Let $F_{\mathcal{A}}$ denote the Milnor fibe…