Exponential polynomials in the oscillation theory

Janne Heittokangas, Katsuya Ishizaki, Ilpo Laine +1

Supposing that $A(z)$ is an exponential polynomial of the form $$A(z)=H_0(z)+H_1(z)e^{{\zeta }_1{z}^n}+\cdots +H_m(z)e^{{\zeta }_m{z}^n},$$ where $H_j$'s are entire and of order $<n$, it is demons…