ON THE COMPLETENESS OF A SYSTEM OF DECREASING ELEMENTARY SOLUTIONS FOR ONE CLASS OF FOURTH-ORDER OPERATOR-DIFFERENTIAL EQUATIONS ON THE SEMI-AXIS

Authors:  E. S. RZAYEV

Keywords: polynomial operator pencil, self-adjoint operator, operator-differential equation, derivative chain of eigen- and adjoined vectors, system of decreasing elementary solutions

DOI:  https://doi.org/10.32010/j.bmj.2023.18