Geodesic

Sommaire du Fascicule no. 1

On the strong asymptotics of the mean $N$-widths of classes of functions that are analytic on the real axis
p. 3-6
Divisibility in the rings $C(X,F)$ of continuous functions
p. 7-16
Polynomial decomposition of Boolean functions into images of homogeneous operators of nondegenerate functions
p. 17-21
Correct solvability of a class of differential equations with deviating argument in a Hilbert space
p. 22-35
Two types of solvability of matrix linear differential equations
p. 36-43
On mixed finite element schemes for nonlinear problems in the theory of shells
p. 44-50
On the classical solvability of a nonlocal boundary value problem for a second-order elliptic equation.~II
p. 51-59
On the representation of lattices by lattices of subsemigroups
p. 60-70
On a problem of the unsteady interaction of fluid flows in a channel
p. 71-75
On the efficiency of the secant and Newton methods
p. 76-80
A Cauchy-type problem for the Euler-Poisson-Darboux equation
p. 81-84
Recurrent approximation by splines
p. 85-87

Sommaire du Fascicule no. 2

On a projective connection admitted by a fifth-order ordinary differential equation
p. 3-9
Nonzero Gaussian curvature on the simplest hyperbolic surfaces
p. 10-12
Some properties of continuous almost AR$G$-deformations
p. 13-16
Geodesics of an associated connectio
p. 17-20
On affine motions in general path spaces
p. 21-25
Synectic metrics in the tangent bundle of almost Hermitian spaces of hyperbolic typePCV
p. 26-29
On the geometry of a generalized Finsler space with a special metric.
p. 30-34
A covariant, locally ${\rm SO}(3)$-covariant Cauchy problem for Hilbert-Einstein equations
p. 35-40
Parabolic Monge-Amp\`ere equations in problems of geometry and meteorology
p. 41-43
Two invariant metrics of the manifold of elliptic lines in the quasi-elliptic space $S^1_3$
p. 44-52
Infinitesimal transformations of a linear frame bundle with a complete lift connection
p. 53-58
Riemannian metrics in fiber spaces. II. The metric of a Grassmannian foliation
p. 59-72
A canonical lift of a linear connection in principal Fréchet bundles
p. 73-81
Albert Valentinovich Sul'din (obituary)

Sommaire du Fascicule no. 3

Sharp estimates for the solution of a variational inverse boundary value problem in a countably connected domain
p. 3-13
On a class of inverse optimal control problems
p. 14-20
Some variants of the subdomain method for integral equations of the first kind
p. 21-28
General type of third-order linear differential equations in the adjoint representation of solvable Lie algebras
p. 29-37
О периодических решениях задачи Коши. I
p. 38-49
Error estimates for semidiscrete approximations in the sense of Galerkin for parabolic equations with a Neumann-type boundary condition
p. 50-57
Locally two-dimensional schemes for the approximation of the three-dimensional heat equation in toroidal coordinates
p. 58-67
The Tricomi problem for an equation with singular coefficients
p. 68-76
On convex sets in a special metric space
p. 77-79
Pad\'e approximation of type $1/S_n$ for $1/f$ on the semiaxis, where $f(x)$ is in the class $H^+(\rho,\omega,\tau)$
p. 80-83

Sommaire du Fascicule no. 4

On an analogue of Specht's criterion for unitary equivalence of matrices for the case of an arbitrary field
p. 3-6
Classification of Cherry transformations on a circle and of Cherry flows on a torus
p. 7-17
The languages ${\rm PQL}$ and ${\rm FO}+{\rm LFP}$ are equivalent even without the presence of order
p. 18-23
On the distribution of the values of Cauchy-type integrals
p. 24-30
On a parametric specification of the solution of a differential equation and its approximate construction
p. 31-34
Generalization and application of a theorem of Radon
p. 35-38
On periodic solutions of the Cauchy problem. II
p. 39-49
The spaces $L\sp {\rm rad}\sb {p\sb 2}(L\sp {\rm ang}\sb {p\sb 1})$ with a radial-spherical mixed norm. (Russian)
p. 50-58
On quadratic forms generated by entire functions
p. 59-65
On a minimax problem for nonlinear elliptic equations
p. 66-74
On a generalization of the Lévy-Khinchin formula to sums of dependent vectors
p. 75-80
Investigation of the Jacobi equation for Lagrangians of a special form
p. 81-83

Sommaire du Fascicule no. 5

On the absence of periodic solutions to a system of differential equations
p. 3-7
Colored cross products, universal enveloping algebras and rings of skew polynomials
p. 8-18
Methods for solving a class of integral equations of the third kind
p. 19-28
Embedding theorems for Boas classes
Geit ; V. E.
p. 29-33
Homotopic classification and calculation of the index of families of multidimensional bisingular integral operators
p. 34-46
On the eigenvalues and eigenfunctions of a class of Sturm-Liouville operators with a singular potential
p. 47-52
On the approximation of solutions of a homogeneous $\pi$-convolution equation with several unknown functions
p. 53-58
On some differential properties of solutions of a partial differential equation
p. 59-62
Solution of the $\mathbf R$-linear conjugation problem in the theory of composites for a three-component medium
p. 63-72
On the solvability in the class of analytic functions of some linear systems of functional-differential equations in a neighborhood of a regular singular point
p. 73-78
A contravariant curvature tensor of a Hermitian elliptic space over an algebra
p. 79-82
Extremal problems on differentiable submanifolds of a Banach space
p. 83-86

Sommaire du Fascicule no. 6

The Riemann problem with a degenerate coefficient on a Riemann surface
p. 3-4
Transformations of biorthogonal systems, and some of their applications. I.
p. 5-16
Solution of a conjugation problem for a composite domain with corner points on lines of separation
p. 17-24
Isoperimetric extremals of a turn on surfaces in the Euclidean space~$E^3$
p. 25-32
On the continuation of unbounded orthogonal vector measures
p. 33-36
An analytic definition of the equivariant degree
p. 37-53
Interpolation with a function parameter in the class of Besov spaces
p. 54-62
Generalization of Mel'nikov's theorem to separatrix contours in the autonomous case
p. 63-67
On an integral in signal detection theory
p. 68-69
An unsolvable algorithmic problem
p. 70-77
Characterization of a sequence of approximations by Zygmund means
p. 78-79
An inverse mixed boundary value problem for an infinitely connected domain with a periodic boundary
p. 80-83
Letter to the editors: ``Identities and quasi-identities in lattices of pseudo-varieties''
p. 84-85

Sommaire du Fascicule no. 7

Geodesic structure of four-dimensional P. A. Shirokov spaces
p. 3-17
On conformal deformations of metrics
p. 18-20
Foliations with locally stable leaves
p. 21-31
Calculation of the invariants of the equipment of multidimensional strips on the submanifolds $F\sp m$ in the spaces $V\sp n(K)$, $n>m$, of constant curvature $K$
p. 32-45
Trajectory isomorphisms of quasigeodesic flows of second degree and their invariants
p. 46-54
$(X,G)$-foliations
p. 55-65
Intrinsic geometry of the genus two surface $X\sb 2\subset E\sb 4$
p. 66-73
A description of a system of many particles that is averaged with respect to local inhomogeneities of a gravitational field
p. 74-76
Homogeneous spaces and quasigroups
p. 77-84

Sommaire du Fascicule no. 8

On some classes of operators, including the class of positive operators
p. 3-5
Representations for sums of even negative powers of sines at equidistant nodes
p. 6-12
Transformations of biorthogonal systems, and some of their applications. II
p. 13-24
Fields of second-order cones and connections generated by them. III. First integrals of geodesics.
p. 25-33
Regularization of nonlinear control problems under perturbations of constraints
p. 34-38
On a connection between holomorphic functions and $G$-transforms of $2n$-dimensional manifolds
p. 39-48
On the observability of systems of linear functional-differential equations
p. 49-53
A general variant of Kre\u\i n's theorem for separately subharmonic functions
p. 54-63
On multiply local formations with systems of normally hereditary subformations
p. 64-70
A biorthogonal multicomponent finite integral transformation and its application to boundary value problems in mechanics
p. 71-81
On some extensions of simple Lie algebras in characteristic $p>0$
p. 82-86

Sommaire du Fascicule no. 9

Solution of the problem of filtration in a dam by the shape optimization method of optimizing: grid approximation
p. 3-13
A condition for graded freeness
p. 14-15
An inversion formula for a Volterra equation of the first kind and its application
p. 16-20
Polynomials of best approximation and relations between moduli of continuity in spaces of functions of bounded $p$-variation
p. 21-26
On a necessary condition for the convergence of averages at Lebesgue $p$-points of functions from $L_p$
p. 27-33
Surfaces of constant negative curvature in a Galilean space
p. 33-36
The boundary element method for computing unsaturated magnetic lenses
p. 37-47
On the asymptotic behavior of solutions of a system of linear differential equations with delay
p. 48-52
An application of P.\,A.~Shirokov's theorem to the Bochner technique
p. 53-59
A proof of the solvability of a problem in the nonlinear theory of shallow shells
p. 60-70
On the cohomology of manifolds over local algebras
p. 71-85

Sommaire du Fascicule no. 10

Asymptotically flat solutions of the Bogomolʹnyĭ equations with solvable gauge group
p. 3-8
Properties of mutually arranged balls in three-dimensional space
p. 9-12
On the method of integrating matrices for the solution of boundary value problems for fourth-order ordinary equations
p. 13-25
On the reaction of a nonlinear system to impulse action
p. 26-29
Geodesic and holomorphically projective mappings of $m$-pseudo- and $m$-quasisymmetric Riemannian spaces
p. 30-35
Inversion of some integral operators with degenerate and oscillating symbols
p. 36-39
A dynamical system for a cosmological model with a scalar field that is non-minimally connected with curvature
p. 40-45
A class of grids with a slowly changing step on a sphere
p. 46-54
Lifts of poly-affinor structures on pure sections of a tensor bundle
p. 55-62
Finite generation of projective modules over some rings
p. 63-75
Polynomial reducts of modules
p. 76-79
On the topological classification of surfaces of the Galileian space $\Gamma_3$
p. 80-82
On the compactness of a commutator on the real axis
p. 83-87

Sommaire du Fascicule no. 11

On the reconstruction of an operator from its conjugate operator
p. 3-13
On a scheme for investigating the solvability of resonance boundary value problems
p. 14-22
On an estimate for the spectral radius of a linear operator in the space of continuous functions
p. 23-28
Continuous dependence of the solution of a linear boundary value problem on the parameters.~I
p. 29-38
On differential equations in $C$-generalized functions
p. 39-49
On the Sturm--Liouville problem for a linear singular functional-differential equation
p. 50-56
On some qualitative properties of equations on a one-dimensional cell complex
p. 57-64
Admissibility of periodic processes and existence theorems for periodic solutions.~I
p. 65-72
On multivalued differentials of piecewise-smooth functions
p. 73-84
On the connectedness of the set of discontinuous solutions of a nonlinear dynamical system with impulse control
p. 85-93

Sommaire du Fascicule no. 12

On the continuity of point-set mappings connected with the method of penalty functions
p. 3-8
Necessary conditions for the optimality of impulse processes with constraints on the image of the control measure
p. 9-16
A conditional minimization method with parametric specification of suitable directions
p. 17-29
The center and the barrier function methods using reduced directions for the nonlinear progamming problem
p. 30-41
On the discrete regularization of nonlinear equations and optimal control problems by singular systems
p. 42-53
Применение метода типа линеаризации при решении негладких равновесных задач
p. 54-62
Asymptotic analysis of matrix-singularly perturbed linear-quadratic optimal control problems
p. 63-74
An optimal control problem for a class of linear equations of Sobolev type
p. 75-83
A quasigradient method for solving optimal control problems
p. 84-91