On half-line spectra for a class of non-self-adjoint Hill operators

Kwang C. Shin

In 1980, Gasymov showed that non-self-adjoint Hill operators with complex-valued periodic potentials of the type $V(x)={\sum }_{k=1}^{\infty }{a}_k{e}^{ikx}$, with $\sum_{k=1}^{\infty}|a…