Zero distributions of derivatives of polynomial families centering on a set

التفاصيل البيبلوغرافية
العنوان: Zero distributions of derivatives of polynomial families centering on a set
المؤلفون: Henriksen, Christian, Petersen, Carsten Lunde, Uhre, Eva
سنة النشر: 2023
المجموعة: Mathematics
مصطلحات موضوعية: Mathematics - Complex Variables, Mathematics - Dynamical Systems, 30C15 (Primary) 37F10, 42C05 (Secondary)
الوصف: Suppose $C \subset \mathbb{C}$ is compact. Let $q_k$ be a sequence of polynomials of degree $n_k \to \infty$, such that the locus of roots of all the polynomials is bounded, and the number of roots of $q_k$ in any closed set $L$ not meeting $C$ is uniformly bounded. Supposing that $(q_k)_k$ has an asymptotic root distribution $\mu$ we provide conditions on $C$ and $\mu$ assuring the sequence of $m$th derivatives $(q_k^{(m)})_k$ also has asymptotic root distribution $\mu$ for any $m\geq 1$. This complements recent results of Totik.
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2312.14519
رقم الأكسشن: edsarx.2312.14519
قاعدة البيانات: arXiv