Accession Number : AD0663914

Title :   HERALD OF LENINGRAD UNIVERSITY, NO. 1, 1963: COLLECTION OF ARTICLES.

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date : 27 APR 1967

Pagination or Media Count : 224

Abstract : Contents: Aleksandr Danilovich Aleksandrov; Possible extension of the idea of solution for linear and quasi-linear elliptic equations of the second order; Generators in ergodic theory; Stability of solution of Minkowski problem; Representation of a function of two variables by the difference of convex functions; Stability of solutions of equations of the elliptic type; Existence of closed convex polyhedrons with given curvatures of vertices in n-dimensional Euclidean and Lobachevskian spaces; Determination of a surface by supporting function; Double sums, connected with the zeros of the Dirichlet L-series; The maximum principle for one class of operators in Banach space; Formulas of summation; Propagation of elastic-plastic load wave in a rod of finite length; Small parameter method for hypersonic ideal gas flow around pointed bodies; Plane motion of vessel with the wind; Certain peculiarities of gas motion at hypersonic speeds; Selection of optimum parameters of vibrator of loop oscillograph; Virtual masses of an elliptic cylinder during motion in liquid. Limited by a flat wall or a free surface; Investigation of recombination spectrum N III of stars and nebulae; Expedition of astronomers to region of active volcanoes of Kamchatka.

Descriptors :   (*MATHEMATICS, USSR), (*MECHANICS, USSR), (*ASTRONOMY, USSR), SCIENTISTS, PARTIAL DIFFERENTIAL EQUATIONS, MEASURE THEORY, TOPOLOGY, FUNCTIONS(MATHEMATICS), GEOMETRY, CONVEX BODIES, SERIES(MATHEMATICS), BANACH SPACE, ELASTIC PROPERTIES, PLASTIC PROPERTIES, HYPERSONIC FLOW, HYDRODYNAMICS, VIBRATORS(MECHANICAL), EQUATIONS OF MOTION, STARS, NEBULAE, VOLCANOES

Subject Categories : Astronomy
      Theoretical Mathematics
      Fluid Mechanics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE