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arXiv 0904.0218math.CAmath-phmath.MP
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关于高阶Heine-Stieltjes多项式

On higher Heine-Stieltjes polynomials

Thomas Holst, Boris Shapiro

摘要:

给定一个微分算子T= \sum_{i=1}^k Q_i(z)d^i/dz^i,其中每个Q_i(z)是一个多项式,定义r=max_i deg(Q_i(z)-i).假设r是非负的,我们考虑如下多参数谱问题:对于每个正整数n,找到所有次数不超过r的多项式V(z),使得方程T(S(z))+V(z)S(z)=0有n次多项式解S(z).对于任意收敛的正规化多项式序列V_j(z),我们计算了相应多项式序列S_j(z)的根计数测度。

英文摘要:

Given a differential operator T=\sum_{i=1}^k Q_i(z)d^i/dz^i where each Q_i(z) is a polynomial define r=max_i deg(Q_i(z)-i). Assuming that r is nonnegative we consider the following multiparameter spectral problem: for each positive integer n find all polynomials V(z) of degree at most r such that the equation T(S(z))+V(z)S(z)=0 has a polynomial solution S(z) of degree n. We calculate for any converging sequence of normalized polynomials V_j(z) the root-counting measure of the corresponding sequence of polynomials S_j(z).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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