Spectrum and the Jost Solution of Discrete Impulsive Klein-Gordon Equation with Hyperbolic Eigenparameter

Year 2022, Volume: 35 Issue: 4, 1614 - 1622, 01.12.2022

Turhan Köprübaşı

https://doi.org/10.35378/gujs.881459

Abstract

Let L denote the quadratic pencil of difference operator with boundary and impulsive conditions generated in l_2 (N) by

△(a_(n-1)△y_(n-1) )+(q_n+2λp_n+λ^2 ) y_n=0 , n∈N∖{k-1,k,k+1},

y_0=0,

(■(y_(k+1)@△y_(k+1) ))=θ(■(y_(k-1)@▽y_(k-1) )); θ=(■(θ_1&θ_2@θ_3&θ_4 )),{θ_i }_(i=1,2,3,4)∈R

where {a_n }_( n∈N), {p_n }_( n∈N), {q_n }_( n∈N) are real sequences, λ=2 cosh⁡(z/2) is a hyperbolic eigenparameter and △, ▽ are respectively forward and backward operators. In this paper, the spectral properties of L such as the spectrum, the eigenvalues, the scattering function and their properties are investigated. Moreover, an example about the scattering function and the existence of eigenvalues is given in the special cases, if

∑_(n=1)^∞▒n(|1-a_n |+|p_n |+|q_n |) <∞.

Keywords

Klein-Gordon Equations, Impulsive Condition, Hyperbolic Eigenparameter, Spectral Analysis, Scattering Function

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