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On the growth and zeros of polynomials attached to arithmetic functions
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg ( IF 0.4 ) Pub Date : 2021-06-14 , DOI: 10.1007/s12188-021-00241-3
Bernhard Heim , Markus Neuhauser

In this paper we investigate growth properties and the zero distribution of polynomials attached to arithmetic functions g and h, where g is normalized, of moderate growth, and \(0<h(n) \le h(n+1)\). We put \(P_0^{g,h}(x)=1\) and

$$\begin{aligned} P_n^{g,h}(x) := \frac{x}{h(n)} \sum _{k=1}^{n} g(k) \, P_{n-k}^{g,h}(x). \end{aligned}$$

As an application we obtain the best known result on the domain of the non-vanishing of the Fourier coefficients of powers of the Dedekind \(\eta \)-function. Here, g is the sum of divisors and h the identity function. Kostant’s result on the representation of simple complex Lie algebras and Han’s results on the Nekrasov–Okounkov hook length formula are extended. The polynomials are related to reciprocals of Eisenstein series, Klein’s j-invariant, and Chebyshev polynomials of the second kind.



中文翻译:

关于附加到算术函数的多项式的增长和零点

在本文中,我们研究了附加到算术函数gh的多项式的增长特性和零分布,其中g是归一化的,适度增长和\(0<h(n) \le h(n+1)\)。我们把\(P_0^{g,h}(x)=1\)

$$\begin{aligned} P_n^{g,h}(x) := \frac{x}{h(n)} \sum _{k=1}^{n} g(k) \, P_{ nk}^{g,h}(x)。\end{对齐}$$

作为一个应用,我们在 Dedekind \(\eta \)函数的幂的傅立叶系数的非零域上获得了最著名的结果。这里,g是除数之和,h是恒等函数。Kostant 在简单复李代数表示上的结果和 Han 在 Nekrasov-Okounkov 钩长公式上的结果得到了扩展。多项式与爱森斯坦级数、克莱因j 不变量和第二类切比雪夫多项式的倒数有关。

更新日期:2021-06-14
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