Research Article
On the Correct Solvability of the Boundary-Value Problem for One Class Operator-Differential Equations of the Fourth Order with Complex Characteristics
1 Institute of Mathematics and Mechanics of NAS of Azerbaijan, 9 F. Agaev street, Baku, AZ1141, Azerbaijan
2 Baku State University, 23 Z. Khalilov street, Baku, AZ1148, Azerbaijan
Boundary Value Problems 2009, 2009:710386 doi:10.1155/2009/710386
Published: 27 September 2009Abstract
Sufficient coefficient conditions for the correct and unique solvability of the boundary-value
problem for one class of operator-differential equations of the fourth order with
complex characteristics, which cover the equations arising in solving the problems
of stability of plastic plates, are obtained in this paper. Exact values of the norms
of operators of intermediate derivatives, which are involved in the perturbed part
of the operator-differential equation under investigation, are found along with these
in subspaces 
in relation to the norms of the operator generated by the main part of this equation.
It is noted that this problem has its own mathematical interest.
