NUMERICAL FUNCTIONAL ANALYSIS AND OPTIMIZATION, cilt.36, sa.2, ss.256-270, 2015 (SCI-Expanded)
In this article, singular dissipative operators with finite impulsive conditions are investigated. In particular, after passing to the inverse operators, it is obtained that the imaginary parts of the inverse operators are nuclear. Finally, using Krein's theorem, it is proved that all root vectors of the singular dissipative operators with finite impulsive conditions are complete in the Hilbert space.