"Published by the American Mathematical Society ... under a grant from the National Science Foundation"--Title page.

Includes bibliographical references.

The variation of curves along a fixed direction /; Boundary-value problems for elliptic equations degenerating on the boundary of a region /; On completeness in a class of non-Jordan regions /; A finite-difference analog of Green's function in the three-dimensional case /; A method for improving the accuracy of grid solutions of the Poisson equation /; On estimation of the error in finding eigenfunctions by the method of finite differences /; The uniqueness theorem in the inverse problem of spectral analysis for the Schr�odinger equation /; On error bounds for approximate methods of estimation of eigenvalues of Hermitian kernels /; On error bounds for eigenvalues calculated by replacing the kernel by an approximating kernel /; Transformations of kernels of integral equations and their influence on the spectra of these equations /; The plane motion of a viscous incompressible fluid /; The Cauchy problem for the kinetic equation of plasma / V. A. Zalgaller; M. I. Visik; S. N. Mergeljan and A. P. Tamadjan; L. A. Ljusternik; E. A. Volkov; V. K. Saulev; Ju. M. Berezanskii; I. P. Mysovskih; I. P. Mysovskih; I. C. Gohberg and M. G. Krein; K. K. Golovkin; S. V. Iordanskii