| Abstract: | The present paper is an abstract of a dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Physical and Mathematical Sciences. The dissertation was defended on June 30, 1967 before the Academic Council of the Faculty of Mechanics and Mathematics of the M. V. Lomonosov Moscow State University. The official opponents were Professor A. V. Efimov, Doctor of Physical and Mathematical Sciences, Professor V. A. Il'in, Doctor of Physical and Mathematical Sciences, and Professor G. P. Tolstov, Doctor of Physical and Mathematical Sciences.Translated from Matematicheskie Zametki, Vol. 2, No. 6, pp. 695–702, December, 1967. |
