Geodesic

Sommaire du Fascicule no. 1

Completely isotropic submanifolds of a~four-dimensional pseudoconformal structure
p. 3-11
The Eisenhart equation and first integrals of geodesics on Riemannian manifolds of Lorentz signature
p. 12-26
Some projective-differential properties of point correspondences of four straight lines
p. 27-35
On the theory of integrability of tensor structures
p. 36-45
Connections in the geometric interpretation of Yang--Mills and Faddeev--Popov fields
p. 46-54
Quasiplanar mappings of spaces with affine connection
p. 55-61
Infinitesimal connection in a~multiple fiber bundle
p. 62-72
Second-order generalized affine connections
p. 73-80
The tangent bundle of φ-spaces
p. 81-88

Sommaire du Fascicule no. 2

Twenty-fifth anniversary of the journal Izvestiya Vuzov. Matematika
p. 3-5
Conditions for univalence with a quasiconformal extension and its application
p. 6-14
Consistent estimates of the rate of convergence of difference solutions to generalized solutions of the first boundary value problem for fourth-order equations
p. 15-22
Systems of comparison associated to stochastic differential equations
p. 23-29
The kernel in Knopp's sense of a~regular positive transformation
p. 30-40
Construction of nonrelaxation subgradients of methods of unconditional minimization of convex functions
p. 41-48
Generalized imprimitivity systems for abelian groups
p. 49-71
Mappings that preserve trajectories of quasigeodesic flows
p. 72-79
Asymptotic solutions of higher-order scalar equations
p. 80-88
Bilinear forms defining measures on projectors

Sommaire du Fascicule no. 3

First cohomology groups over separable torsion-free abelian groups
p. 3-11
Liouville's theorem for generalized analytic functions on an open Riemann surface
p. 12-16
On the lattice of subtrees of a~tree
p. 17-21
Existence of a~solution that satisfies a~functional-differential equation almost everywher
p. 22-30
Ideals of commutative semigroups
p. 31-39
A~criterion for linearization of differential forms
p. 40-46
A~new class of triple sequences with ideal periodic autocorrelation properties
p. 47-50
Some boundary value problems for mth-order ordinary differential equations in a~class of generalized functions
p. 51-58
Calculation of an integral of Martinelli--Bochner type in a~ball and some of its applications
p. 59-66
On the question of the construction of an optimal method for solving a~linear equation of the first kind
p. 67-68
Nikod\'ym's theorem for multivalued set functions
p. 68-70
Positive theories of free algebraic systems
p. 70-73
Geometric model of semitangent structures
p. 73-75
Optimal search algorithms for the least value of a~function
p. 75-77
Index sets of difference classes
p. 78-79
On sufficient conditions for univalence of n-symmetric solutions of inverse boundary value problems
p. 80-82
Integral representation of operators acting from a~Banach space of measurable vector-valued functions into a~Banach space
p. 82-84
Conditions for nonemptiness of the domain of (C,1)-sums of series with real terms
p. 84-86
Locally convex spaces in which each probability is dense
p. 86-88
Corrections: ``On a~system of generators for algebras over random variables''

Sommaire du Fascicule no. 4

Thematic issue `` Boundary value problems of the theory of analytical functions and singular operators''
Noether's theory of singular integral operators with shift
p. 3-27
Singular integrals over a~sphere and the construction of the characteristic from the symbol
p. 28-42
On the investigation of an integral equation with a~Carleman kernel
p. 43-51
Some metric properties of boundary values of Schwarz integrals of finite Borel measures
p. 52-60
Local properties of the solution of the Wiener--Hopf equation
p. 61-67
The Riemann problem on a~closed Jordan curve
p. 68-80
Global and local factorability of a~measurable matrix-function, and the Noether property of the singular operator generated by it
p. 81-87
Factorization of certain classes of semi-almost-periodic matrix-functions and its applications to systems of equations of convolution type
p. 88-94
The Riemann boundary value problem for almost periodic functions
p. 95-96

Sommaire du Fascicule no. 5

Difference schemes for nonlinear problems of filtration theory with a~discontinuous law
p. 3-12
Numerical solution of nonlocal elliptic problems
p. 13-19
Two-sided solutions of the equation of motion of charged particles with lag
p. 20-25
Multipliable distributions
p. 26-34
On the question of the determinacy of the moment problems of Stieltjes and Hamburger
p. 35-40
Some ways of constructing an operator~B in implicit two-layer iteration schemes that ensures their convergence when the operator~A is dissipative
p. 41-47
Some features of problems of synthesis of shells in a~plan by dynamic characteristics
p. 48-52
Estimates of some functionals of solutions of matrix inequalities encountered in control theory
p. 53-59
Solution of a~problem of S.~Ulam
Moduli of continuity and best approximations in Lp of functions represented by lacunary Walsh series
p. 61-68
Infinitesimal areal deformations of oval surfaces
p. 69-71
Unars with a~separative monoid of endomorphisms
p. 71-74
Covering and distortion theorems for functions that are almost bounded in a~circle or an annulus
p. 74-76
The spectrum of a~class of differential operators
p. 76-78
The projection method in a~variable metric for a~convex programming problem
p. 78-80
Absolute summability with a~power of orthogonal series by the Vorono\v\i--N\"orlund method
p. 80-82
Some linear-invariant families of functions having an integral representation
p. 82-85
Some properties of polynomials, orthogonal on a~finite system of points
p. 85-88

Sommaire du Fascicule no. 6

Estimation of the Fourier coefficients of subharmonic functions
p. 3-11
Versality theorems for certain groups of transformations of coordinates
p. 12-17
Mixed boundary value problems connected with a~limiting electrochemical perforation
p. 18-23
Minimax estimation of the mean value of a~stationary random process with a~correlation function of P\'olya class
p. 24-25
Weyl multipliers for orthogonal series
p. 26-32
Fundamental solutions of elliptic complexes and their applications
p. 33-42
A general method of finding a~point in a~convex set
p. 43-51
Some applications of the scattering problem for a~pair of spaces with an unbounded identification operator
p. 52-53
The rate of convergence of the projection method with a~choice of step by subdivision for solution of a~convex programming problem
p. 53-55
Nonholonomic line geometry as a~theory of distributions on a~Grassmann manifold
p. 56-58
Smoothness of multidimensional operators of potential type over a~bounded domain
p. 58-61
A class of holomorphic mappings
p. 61-62
Change of the Jordan structure of matrices under perturbations, and application in the theory of a~linear sequential machine
p. 63-64
The generalized Christoffel problem in a pseudo-Euclidean space En−1,1
p. 64-67
Investigation of extremal problems in the Becker class
p. 68-70
Limit values of multiplicative integrals
p. 70-74
Some geodesic models and an expansion theorem for second-order differential equations of the second degree
p. 74-76
Conference ``Continuous Medium Mechanics'' dedicated to the 60 anniversary of the Soviet Union

Sommaire du Fascicule no. 7

Some modern methods of solution of difference equations
p. 3-12
Some methods of approximate solution of differential and integral equations
p. 13-27
Difference methods for solving nonlinear problems of filtration theory
p. 28-45
Estimates of the computational work for boundary value problems with Stokes operator
p. 46-58
Chebyshev iteration methods for solving incompatible systems
p. 59-68
Determination of a~class of polynomials deviating least from zero
p. 69-74
A numerical method of a~higher degree of accuracy for a~singularly perturbed boundary value problem
p. 75-80
Some methods of regularization and numerical solution of integral equations of the first kind
p. 81-85

Sommaire du Fascicule no. 8

Reconstruction of the domain of definition of the Helmholtz equation with a~small parameter
p. 3-7
Approximations of continuous periodic functions by linear positive methods of convolution type
p. 8-10
Jet flow around a~nonsmooth curvilinear obstacle
p. 11-20
A~necessary condition for an extremum in smooth problems with operator constraints
p. 21-26
Inverse problem for the radial Schr\"odinger equation in the case of fixed energy and variable orbital moment
p. 27-31
On the question of approximating functions that are continuous on a segment by truncated de la Vall\'ee--Poussin sums
p. 32-33
Bending of a~near-polygonal plate with a~free open boundary
p. 34-40
Construction of lower and upper functions for a boundary value problem of a~system of second-order quasilinear parabolic equations
p. 41-44
An alternative in a~minimax differential game for systems with aftereffect
p. 45-50
The operation of Cartesian product
p. 51-53
Norms of operators that are Fourier--Legendre partial sums
p. 54-59
Perturbations of a~weighted shift operator
p. 60-63
A linear problem for a~system of hyperbolic type in a~characteristic quadrangle
p. 64-73
A property of kernels of families of Noether operators representing elements from K~(S2n)
p. 74-75
Combined criteria for univalence of functions analytic in the disk
p. 76-77
An approach to the solution of a~two-point boundary value problem for a~system of first-order differential equations with linear deviation of the argument
p. 78-80
A three-parameter family of planes with a~finite number of points in a~plane of the family
p. 80-82
Stationary subsets of ordered Menger algebras
p. 82-84
An algebra of distributions connected with a~light cone
p. 84-87

Sommaire du Fascicule no. 9

A multidimensional uniqueness theorem
p. 3-12
Necessary and sufficient conditions for continuity of the Martinelli--Bochner integral
p. 13-17
A class of compact homogeneous spaces
p. 18-21
The method of the conditional ε-subgradient
p. 22-26
Statistical estimation of distributions of sums of independent random variables
p. 27-41
Averaging in differential inclusions with lag
p. 42-45
The effect of the selection of components of a~random variable on classification
p. 46-55
Unsolvable periodic groups with invariator condition for normal subgroups
p. 56-64
Properties of certain orthonormal systems
p. 65-73
A uniqueness theorem
p. 74-79
The influence tensor of a~locally mixed problem for an elastic half space
p. 80-84
n-chain geometries
p. 85-87

Sommaire du Fascicule no. 10

Some geometric inequalities and sufficient conditions for p-valence
p. 3-12
The growth of entire functions harmonic in Rn
p. 13-17
Dimension of the manifold of solutions of a~system of partial differential equations
p. 18-21
The well-posedness of a~model nonstrictly hyperbolic mixed problem
p. 22-25
A necessary condition for imbedding Hpω into a~space of functions of bounded variation
p. 26-28
A class of almost completely decomposable torsion-free abelian groups
p. 29-36
Investigation of two-layer difference schemes for parabolic variational inequalities
p. 37-45
Optimal control for a~bilinear hyperbolic system
p. 46-48
A remark on the stability of complex dynamical systems
p. 49-50
A singular integral equation of the first kind in the exceptional case in classes of generalized functions
p. 51-56
Groups with almost normal infinite subgroups
p. 57-63
φ-spaces of a~semidirect product of Lie groups
p. 64-73
Classification of rigged hypersurfaces by nets
p. 74-76
Morse--Smale systems without closed trajectories
p. 77-82
Some regularizing algorithms for nonlinear problems with a~monotone operator
p. 83-87

Sommaire du Fascicule no. 11

Testing of composite statistical hypotheses from samples of large size
p. 3-18
Lower bounds for the mean length of a~sequentially planned experiment
p. 19-41
The empirical d-posterior approach to the problem of guaranteedness of statistical inference
p. 42-58
Asymptotic behavior of the necessary sample size in d-guaranteed discrimination of two close hypotheses
p. 59-66
Conditions for the existence of empirical Bayes estimates and optimization of Bol'shev bounds
p. 67-73
Geometric convergence of random processes and the statistics of random sets
p. 74-81
Lower bounds for the sufficient sample size in procedures of guaranteed equivariant estimation (the case of the general transformation group)
p. 82-83
The distribution of fractional parts
p. 84-86
Valentin Konstantinovich Ivanov (on his 75th birhday)

Sommaire du Fascicule no. 12

A class of series with monotone coefficients
p. 3-7
Solvability of the problem of singular extension of partial matrices
p. 8-12
Some families of maximal subsystems of algebras in a~system of algorithmic algebras of partial recursive functions and predicates.~I
p. 13-20
The method of linearization for a~nonlinear integro-differential system of transport equations
p. 21-29
The Riemann problem on an open Jordan curve
p. 30-38
The Gleason theorem in a~direct integral of factors of type~I
p. 39-42
Topological questions of the theory of probability measures in Fr\'echet spaces
p. 43-51
Application of the Loewner--Kufar\"ev equation to obtaining sufficient conditions for univalence
p. 52-54
Some properties of conjugate functions of two variables in moduli of smoothness
p. 55-58
Indecomposable elements of lattices of universal classes
p. 58-60
A method of extensions of Lie algebras
p. 61-64
Comparison of methods of Euler summation (E,q) and [E,q]r on a~class of orthogonal series
p. 64-67
Some properties of a~generalized inverse operator in a~vector space
p. 67-69
Maximal periodic semigroups of second-order matrices
p. 69-71
Boundedness and Noethericity of pseudodifferential operators and weighted H\"older spaces
p. 71-73
Singular cases of the Darboux problem for a~system of equations of the type of the Tricomi equations
p. 73-75
Eigensubspaces of an operator with a~difference kernel
p. 75-77
Jet bundles defined by local algebras
p. 77-80