Erdal, İbrahimYardımcı, Şeyhmus2021-11-052021-11-052019-08-01https://doi.org/10.31801/cfsuasmas.481747http://hdl.handle.net/20.500.12575/75923In this paper, we investigate the continuous spectrum and resolvent operator of a second-order difference operator with an impulsive condition. Then, under certain conditions, we prove finiteness of eigenvalues, spectral singularities. At last, we present principal functions of corresponding impulsive operator.enImpulsive conditionDifference operatorSpectrumArticle682179718102618-6470