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arXiv 1503.04026math.CAmath.CV
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多项式系数线性常微分方程的整体非振动性

On global non-oscillation of linear ordinary differential equations with polynomial coefficients

Dmitry Novikov, Boris Shapiro

摘要:

本文证明了一个多项式系数的线性常微分方程在$\mathbb{C} P^1$中是全局非振动的当且仅当它是Fuchsian的,并且在它的每一个奇点,任何两个不同的特征指数有不同的实部.作为我们研究的一个副产品,我们得到了一个新的显式上界的指数多项式在一个水平带的零点的数目。

英文摘要:

In this note we show that a linear ordinary differential equation with polynomial coefficients is globally non-oscillating in $\mathbb{C} P^1$ if and only if it is Fuchsian, and at every its singular point any two distinct characteristic exponents have distinct real parts. As a byproduct of our study, we obtain a new explicit upper bound for the number of zeros of exponential polynomials in a horizontal strip.

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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