Nihal Yokuş, Turhan Köprübaşı
952 142


In this paper, we determine the principal functions corresponding to the eigenvalues and the spectral singularities of the boundary value problem (BVP)

-y′′+q(x)y=λ²y, x∈ℝ₊=[0,∞]


where q is a complex-valued function, α_{i}, β_{i}∈ℂ, i=0,1,2 and λ is a eigenparameter, and introduce the convergence properties of principal functions.


Eigenvalue, Jost solution, principal function, non-selfadjoint differential operator, spectral analysis, spectral singularity.

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