The Flow of Polynomial Roots Under Differentiation
The Flow of Polynomial Roots Under Differentiation
复制标题
微分下多项式根的流动
DOI:
10.1007/s40818-022-00135-4
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发表时间:
2022
期刊:
影响因子:
2.8
通讯作者:
Tan, Changhui
中科院分区:
文献类型:
--
作者:
Kiselev, Alexander;Tan, Changhui
The question about behavior of gaps between zeros of polynomials under differentiation is classical and goes back to Marcel Riesz. Recently, Stefan Steinerberger formally derived a nonlocal nonlinear partial differential equation which models dynamics of roots of polynomials under differentiation. In this paper, we connect rigorously solutions of Steinerberger’s PDE and evolution of roots under differentiation for a class of trigonometric polynomials. Namely, we prove that the distribution of the zeros of the derivatives of a polynomial and the corresponding solutions of the PDE remain close for all times. The global in time control follows from the analysis of the propagation of errors equation, which turns out to be a nonlinear fractional heat equation with the main term similar to the modulated discretized fractional Laplacian.
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影响因子:
1.4
作者:
M. Voit;Jeannette H. C. Woerner
通讯作者:
Jeannette H. C. Woerner
影响因子:
1
作者:
J. Hoskins;S. Steinerberger
通讯作者:
S. Steinerberger
影响因子:
1.4
作者:
B. Simon
通讯作者:
B. Simon
DOI:
--
发表时间:
1931
期刊:
影响因子:
--
作者:
A. Wiman
通讯作者:
A. Wiman
DOI:
10.1090/s0002-9939-2014-12258-1
发表时间:
2012
期刊:
arXiv: Probability
影响因子:
--
作者:
Z. Kabluchko
通讯作者:
Z. Kabluchko