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 $0<h(n) \leq h(n+1)$. We put $P_0^{ g,h}(x)=1$ and \begin{ equation*} P_n^{ g,h}(x) := \frac{ x}{ h(n)} \sum_{ k=1}^{ n} g(k) \, P_{ n-k}^{ g,h}(x). \end{ equation*} 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.

Categories: math.NT

On the growth and zeros of polynomials attached to arithmetic functions