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

Includes bibliographical references.

On a class of nonlinear differential equations;An investigation of a nonlinear system of three differential equations;Fundamental solutions of linear partial differential equations with constant coefficients;Expansion in eigenfunctions of non-self-adjoint singular differential operators of second order;On a certain property and a new definition of generalized almost periodic functions of A. S. Besicovitch;Nonstationary Navier-Stokes equations;Solution in the large of the Cauchy problem for a nonstationary plane flow of a viscous, incompressible fluid;Investigation of the Navier-Stokes equation for a stationary flow of an incompressible fluid;The method of sections in the theory of dynamical systems;Thermodynamics of gases and differential equations;On approximate methods in the inverse problem of the quantum theory of scattering;On cohomologies of spaces of paths