The D-plus Discriminant and Complexity of Root Clustering

Jing Yang, Chee Keng Yap · arXiv (Cornell University) · 2021

Let $p(x)$ be an integer polynomial with $m\ge 2$ distinct roots $ρ_1,\ldots,ρ_m$ whose multiplicities are $\boldsymbolμ=(μ_1,\ldots,μ_m)$. We define the D-plus discriminant of $p(x)$ to be $D^+(p):= \prod_{1\le i

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