Geodesic

Sommaire du Fascicule no. 1

Some classes of linear conjugation problems for a~two-dimensional vector resolvable in a~closed form
p. 3-20
A relative variant of the Morse theory
p. 21-30
Geometrical interpretations of a~torsion tensor, curvature tensors, and curvature pseudotensors in the generalized Finsler space
p. 31-40
A problem with Tricomi and Frankl conditions on the characteristic for a~class of mixed-type equations
p. 41-50
To the theory of boundary problems for elliptic equations with superposition operators in the boundary condition
p. 51-61
Solvability of systems of integral Volterra equations of the first kind with piecewise continuous kernels
p. 62-72
Solvability of a~nonlocal problem for a~loaded parabolic-hyperbolic equation
p. 73-81

Sommaire du Fascicule no. 2

Eight-dimensional Bol webs with an almost zero curvature tensor
p. 3-15
Invertible linear relations generated by an integral equation with a~Nevanlinna measure
p. 16-29
Nonlinear approximation of functions from the class $L^r$ with respect to the Vilenkin system
p. 30-39
Local automorphisms of nilpotent algebras of matrices of small orders
p. 40-48
Weighted spherical semidesigns and cubature formulae for calculating integrals on a~sphere
p. 49-55
The Green function of the boundary value problem on a~star-shaped graph
p. 56-66
Regularization methods for nonlinear ill-posed equations involving $m$-accretive mappings in Banach spaces
p. 67-74
Optimal control of impulsive systems with nonlocal boundary conditions
p. 75-84

Sommaire du Fascicule no. 3

Unconditionally stable schemes for convection-diffusion problems
p. 3-15
Classification of complex simply connected homogeneous spaces of dimensions not greater than~2
p. 16-32
Semirings satisfying the Baer criterion
p. 33-39
The existence of a~linear horseshoe of continuous maps of dendrites
p. 40-46
Some fixed point theorems for weakly $T$-Chatterjea and weakly $T$-Kannan-contractive mappings in complete metric spaces
p. 47-55
Clarification of the hierarchy of classes of boolean functions representable as a~k-OBDD branching program models
p. 56-61
Reconstruction of a~pure state from incomplete information on its optical tomogram
p. 62-67
On conditions of solvability of the Goursat problem in quadratures
p. 68-73
One approach to constructing cutting algorithms with dropping of cutting planes
p. 74-79

Sommaire du Fascicule no. 4

Classification of rational functions in symplectic and metric spaces
p. 3-9
Connections over a~distribution and geodesic sprays
p. 10-18
Attractor decomposition for closed binary relations on compact Hausdorff spaces
p. 19-31
Reduction of variational inequalities with irregular operators on a~ball to regular operator equations
p. 32-41
Various representations of matrix Lie algebras related to homogeneous surfaces
p. 42-60
Operads of hypergraphs
p. 61-73

Sommaire du Fascicule no. 5

Approximation of differentiation operator in the space $L_2$ on semiaxis
p. 3-12
Quasisolutions of the inverse boundary value problem of aerohydromechanics
p. 13-24
The left Bol three-webs with the $IC$-property
p. 25-35
Uniformly continuous dependence of a~solution to a~controlled functional operator equation on a~shift of control
p. 36-50
The Bitsadze--Samarskii problem with the Frankl condition on the degeneration line for a~mixed-type equation with singular coefficient
p. 51-60
A sharp error estimate of the best approximation by algebraic polynomials in the weighted space $L_2(-1,1)$
p. 61-63
Absolute continuity of quasiconformal map of Carnot--Carath\'eodory spaces
p. 64-68

Sommaire du Fascicule no. 6

On a~weighted boundary value problem in an infinite half-strip for a~biaxisymmetric Helmholtz equation
p. 3-12
Description of ring varieties whose finite rings are uniquely determined by their zero-divisor graphs
p. 13-24
Stability of solutions to differential equations with several variable delays.~I
p. 25-36
Behavior of a~singular integral with the Hilbert kernel near a~point of weak continuity of its density
p. 37-44
Solution of a~problem of $\mathbb R$-linear conjugation for confocal elliptical annulus in the class of piecewise-meromorphic functions
p. 45-59
Two-point boundary value problem for gyroscopic systems in some Lorentzian manifolds
p. 60-69

Sommaire du Fascicule no. 7

Stability of solutions to differential equations with several variable delays.~II
p. 3-15
A mixed problem with Tricomi and Frankl conditions for the Gellerstedt equation with a~singular coefficient
p. 16-30
An affine interpretation of B\"acklund maps
p. 31-44
Polyharmonic functions in structures of exact solutions in the elasticity theory
p. 45-51
Iterative processes of the second order monotone inclusions in a~Hilbert space
p. 52-61
The Dirichlet problem for a~loaded mixed-type equation in a~rectangular domain
p. 62-76
Lebesgue functions corresponding to a~family of Lagrange interpolation polynomials
p. 77-89

Sommaire du Fascicule no. 8

Groups with relatively small normalizers of biprimary subgroups
p. 3-13
On the Fourier coefficients of functions of bounded variation
p. 14-23
The asymptotic stability of a~nonstationary system with delay
p. 24-33
The stress state of a~plastic layer with a~variable yield strength under a~flat deformation
p. 34-43
Stability of solutions to differential equations with several variable delays.~III
p. 44-56
A nonlocal problem for a~mixed-type equation whose order degenerates along the line of change of type
p. 57-65
Isoperimetric properties of Euclidean boundary moments of a~simply connected domain
p. 66-79
A one-parameter family of quadratic maps of a~plane including Morse--Smale endomorphisms
p. 80-85
Discretization of solutions to a~wave equation, numerical differentiation, and function reconstruction for a~computer (computing) diameter
p. 86-93

Sommaire du Fascicule no. 9

Properties of point correspondences between three multidimensional surfaces of projective spaces
p. 3-15
Approximation of functions by universal sums of series with respect to subsystems of Hermite polynomials
p. 16-20
Geometric description of $L_1$-spaces
p. 21-27
An example of nonuniqueness of a~simple partial fraction of the best uniform approximation
p. 28-37
On factorization of the characteristic quasipolynomial of a~system of linear differential equations with delay
p. 38-44
Topologies of uniform convergence. The property in the sense of Arens--Dugundji and the sequential property
p. 45-58
Families of domains with best possible Hardy constant
p. 59-63
Weak solvability of a~system of thermoviscoelasticity for Jeffris model
p. 64-69
Control of functional differential system in conditions of impulse disturbances
p. 70-74
Isoperimetric inequalities for $L^p$-norms of the stress function of a~multiply connected plane domain
p. 75-80
An optimal control problem for a~nonlinear elliptic equation with a~phase constraint and state variation
p. 81-86

Sommaire du Fascicule no. 10

On some functional calculus of closed operators in a~Banach space
p. 3-15
On positiveness of the Cauchy function of a~singular linear functional differential equation
p. 16-23
Sine and cosine series in $L_\varphi$ classes
p. 24-42
Characteristic problems with normal derivatives for hyperbolic systems
p. 43-54
Explicit forms of the Schwarz integral and their application in inverse boundary-value problems
p. 55-62
On compact quantum semigroup $QS_\mathrm{red}$
p. 63-68
Defining relations of a~free modular lattice of rank~$3$
p. 69-72
Sets convex in a~cone of directions
p. 73-76
A difference scheme for the numerical solution of an advection equation with aftereffect
p. 77-82

Sommaire du Fascicule no. 11

Lie sheaves of small dimensions
p. 3-19
Estimation of statistical characteristics of attainability sets of controllable systems
p. 20-32
Attraction sets in abstract attainability problems: equivalent representations and basic properties
p. 33-50
Connectivity estimations of errors of linearization of essentially nonlinear systems
p. 51-63
On boundedness and compactness of multidimensional integral operators with homogeneous kernels
p. 64-68
Fractal approximation of vector functions
p. 69-73
A note on $\Delta_2^0$-spectra of linear orderings and degree spectra of the successor relation
p. 74-78

Sommaire du Fascicule no. 12

A periodic boundary value problem for a~fourth-order differential equation
p. 3-10
Boundedness and stability criteria for linear ordinary differential equations of the second order
p. 11-18
The uniqueness of a~solution to the inverse Cauchy problem for a~fractional differential equation in a~Banach space
p. 19-35
Evaluation of power sums of roots for systems of non-algebraic equations in~$\mathbb C^n$
p. 36-50
Affine connections on three-dimensional pseudo-Riemannian homogeneous spaces.~I
p. 51-68
Projective equivalence of smooth functions on a~plane
p. 69-71
The Haagerup problem on subadditive weights on $W^*$-algebras.~II
p. 72-76
Minimal periods of solutions to higher-order functional differential equations
p. 77-82
A homogeneous Hilbert problem with a~countable set of discontinuity points of coefficients and a~logarithmic singularity of index
p. 83-88