MATHEMATICAL AND COMPUTER MODELLING, cilt.53, sa.5-6, ss.805-813, 2011 (SCI-Expanded)
In this paper, we study the determinant of perturbation connected with the dissipative operator L generated in L(2)(I) by (1.1)-(1.5). Then using Livsic's theorem, we investigate the problem of completeness of the system of eigenfunctions and associated functions of L. (C) 2010 Elsevier Ltd. All rights reserved.