The Spectrum of Delay Differential Equations with Multiple Hierarchical Large Delays

Stefan Ruschel, Serhiy Yanchuk

We prove that the spectrum of the linear delay differential equation $x^{\prime }(t)=A_{0}x(t)+A_{1}x(t-{\tau }_1)+\dots +A_{n}x(t-{\tau }_n)$ with multiple hierarchical large delays $1\llτ_{1}\llτ…