When are multidegrees positive?

Federico Castillo, Yairon Cid-Ruiz, Binglin Li +2

Let $k$ be an arbitrary field, $P=P_k^{m_1}{\times }_k\cdots {\times }_k{P}_k^{m_p}$ be a multiprojective space over $k$, and $X\subseteq P$ be a closed subscheme of $P$. We provide…