Operators and Matrices · Volume 12, Issue 1 Some spectral properties of fourth order differential operator equation 12-19 Pages 287-299 DOI 10.7153/oam-2018-12-19 Downloads Short PDF Full PDF PNG Authors Nigar M. Aslanova Mamed Bayramoglu Khalig M. Aslanov Keywords Hilbert space differential operator equation spectrum interlacing trace class operators regularized trace Subject classes 34B05 34G20 34L20 34L05 47A05 47A10