On discontinuous Dirac systems with eigenvalue dependent boundary conditions

Author(s):  
Etibar S. Panakhov ◽  
Tuba Gulsen
Author(s):  
P. A. Binding ◽  
P. J. Browne

Sturm–Liouville differential equations are studied under non-separated boundary conditions whose coefficients are first degree polynomials in the eigenparameter. Situations are examined where there are at most finitely many non-real eigenvalues and also where there are only finitely many real ones.


Author(s):  
Paul A. Binding ◽  
Patrick J. Browne ◽  
Bruce A. Watson

A version of the Darboux transformation is explored for Sturm-Liouville problems with eigenvalue-dependent boundary conditions, from differential-equation and operator-theoretic viewpoints. Some of the literature on Darboux's transformation is related in a historical introduction.


2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Nihal Yokuş

We consider the operator generated in by the differential expression , and the boundary condition , where is a complex-valued function and , with . In this paper we obtain the properties of the principal functions corresponding to the spectral singularities of .


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