JOURNAL OF DIFFERENCE EQUATIONS AND APPLICATIONS, cilt.17, sa.3, ss.255-266, 2011 (SCI İndekslerine Giren Dergi)
Let L denote the difference operator generated in [image omitted] by the system of the difference expressions[image omitted]where [image omitted] and [image omitted] are complex sequences. In this paper, we investigated the spectrum, the spectral singularities, and properties of the principal vectors corresponding to the spectral singularities of L.