Recently, there appeared a considerable interest in inverse Sturm–Liouville-type problems
with constant delay. However, necessary and sufficient conditions for solvability of such …

This paper deals with nonself-adjoint second-order differential operators with two constant
delays from $\left [\frac {\pi}{2},\pi\right) $ and two real-valued potentials from $ L_ {2}[0,\pi] …

This paper deals with non-self-adjoint second-order differential operators with two constant
delays from [π∕ 2, π) and two potentials from L 2 0, π. We study the inverse spectral …

This paper deals with non-self-adjoint second-order differential operators with two constant
delays. We consider four boundary value problems 𝐷< sub> 𝑖, 𝑘, 𝑖= 0, 1, 𝑘= 1, 2... and 𝜆 is …

The inverse problem concerns how to reconstruct the operator from given spectral data. The
main goal of this paper is to address nonlinear inverse Sturm–Liouville problem with …

This paper deals with non-self-adjoint differential operators with two constant delays
generated by-y′′+ q 1⁢(x)⁢ y⁢(x-τ 1)+(-1) i⁢ q 2⁢(x)⁢ y⁢(x-τ 2), where π 3≤ τ 2< π 2< …

In this paper, we consider self-adjoint Sturm? Liouville problem (SLP) of higher-order. We
define an equivalence relation between second-and higher-order SLP. Using the Darboux …

In this manuscript, the second order differential operators with constant delay and
transmission boundary conditions are studied. The asymptotic forms of the characteristic …

This paper deals with the boundary value problem involving the differential equation? y??+
qy=? y, subject to the parameter dependent boundary conditions with finite number of …

In this manuscript, we study nonself-adjoint second-order differential operators with finite
number of constant delays. We investigate the properties of the spectral characteristics and …