Geodesic

Sommaire du Fascicule no. 1

Uniform arithmetical completeness of modal provability logics
p. 3-9
Volume rigidity of two-dimensional manifolds
p. 10-14
Bifurcation of a~stable invariant torus from an equilibrium
p. 15-19
Nonlocal well-posed boundary-value problems in a~layer
p. 20-25
Differential invariants of webs on 2-dimensional manifolds
p. 26-37
Absolute diameters and codiameters
p. 38-46
Filtered products, direct integrals, and convex analysis of numerical ranges
p. 47-55
Extensions of finitely additive measures
p. 56-60
Normalization of reflexive and dihedral modules
p. 61-67
Absence of complete Lobachevskii planes in two classes of surfaces in~$E_4$ with~$K=-1$
p. 68-74
The Andrews--Curtis problem for~$\mathscr{F}(\mathfrak{M})$
p. 75-77
Boundary value problem for nonlinear parabolic equations of infinite order in Sobolev--Orlicz spaces
p. 78-85
Spectral representation of a~hyperbolic evolutionary process connected with a~Sturm--Liouville differential expression
p. 86-94
Functions which are smooth along vector fields
p. 95-102
Binary-$(-1,1)$-nilalgebras
p. 103-109
Role of minimal non-$\mathfrak{F}$-groups in the theory of formations
p. 110-115
Analog of a~theorem of Hal\'asz in the case of a~generalization of the additive problem of divisors
p. 116-127
Differentiation of some infinite-dimensional topologically nilpotent Lee algebras
p. 128-133
Finite basicity of the union of some varieties of algebras
p. 134-137
Algorithmic recognition of identities in one class of finitely defined semigroups
p. 138-145
The index of operators with shift, and cyclic subgroups
p. 146-148
Commutative semigroups with cancellation of dimension~$1$
p. 148-149
Homothetic mappings of distinguishing space-time
p. 149-151
Gauss-type cubature formulas with an asymptotically minimal number of nodes
p. 151-152
Asymptotic behavior of sums of multiplicative functions
p. 153-155

Sommaire du Fascicule no. 2

Construction of the normal form of the equation of a~surface of high codimension
p. 3-9
Finite-gap solutions of boundary value problems for integrable equations
p. 10-18
Uniform resolvent convergence of linear operators under perturbations
p. 19-25
Classification of epimorphisms of fundamental groups of surfaces onto free groups
p. 26-35
Weak and strong ranges of sums of a~series in a~Banach space
p. 36-44
Burnside's $p^\alpha$-lemma
p. 45-48
Stable rationality of the field of invariants of linear representations of the groups~$\mathrm{PSL}_6$ and~$\mathrm{PSL}_{12}$
p. 49-52
Analysis of the convergence of the multigrid method for rigid problems
p. 53-63
Holomorphic extension of integrable $CR$-functions from part of the boundary of the domain
p. 64-71
Klein supersurfaces
p. 72-82
Differentiation of certain multi-valued mappings on Lie groups
p. 83-92
Bochner's technique in the theory of Riemannian almost product structures
p. 93-98
Semi-chained rings and modules
p. 99-106
A~generalization of the Darboux surfaces
p. 107-113
Pseudo-topological commutative superalgebras with nilpotent ghosts
p. 114-122
Global relations
p. 123-127
A~theorem on divisors of entire functions of finite order
p. 128-136
Solvable irreducible linear groups of arbitrary degree with a~Hall $TI$-subgroup
p. 137-144
Spectral theory of one-phase solutions of a~Volterra chain
p. 145-148
Asymptotic solutions of traveling wave type for semilinear parabolic equations with a~small parameter
p. 148-151
Spectral function of the Sturm--Liouville equation with an impurity potential that is bounded on the half-axis
p. 151-153
Summation of Fourier coefficients by the methods~$(C,\alpha)$
p. 154-155
Exponential integrability of a~conjugate function
p. 155-157

Sommaire du Fascicule no. 3

Carath\'eodory theorem for matrix-valued functions and the maximal jump of spectral functions in extension problems
p. 3-11
Surfaces with maximal curvature of the Grassmann image
p. 12-19
System, similar to a~normal form
p. 20-31
Breakdown of uniqueness of solutions of the Dirichlet problem for elliptic systems in a~disc
p. 32-36
Approximations of differentiable functions of several variables
p. 37-44
Behavior of the sum of a~series of exponentials near the boundary of the domain of regularity
p. 45-53
Representation of the approximational error term and sharp estimates for some local splines
p. 54-65
Domination-complete graphs
p. 66-69
Remarks on the superposition measurability of a~multivalued function
p. 70-72
Categorical properties of the set of nonuniqueness points in the space~$L_\varphi$
p. 73-80
Inverse problem of the determination of a~nonlinear dependence of the electric current on the electric field intensity
p. 81-90
Exact solutions of some approximation problems by means of positive operators
p. 91-99
Several new results on quasicrystallographic groups in Novikov sense
p. 100-107
Constructive formalization of the Tennenbaum theorem and its applications
p. 108-118
A~propositional logic of Boolean recursive programs in which predicate variables appear in conditions
p. 119-127
The origin of vortices in an ideal fluid
p. 128-133
A~quasiinvariant smooth measure on the diffeomorphism group of a~domain
p. 134-142
Finite-gap solutions of the equation of cylindrical-symmetric Heisenberg magnetics
p. 143-145
Criteria for $M$-ideals of compact operators
p. 145-147
Holomorphicity of $CR$-mappings into a~space of large dimension
p. 147-149
Decomposition of the regular representation of a~finite group with two generators
p. 149-151
Some theorems of Phragm\'en--Lindel\"of type for solutions of semilinear parabolic inequalities
p. 151-153
Contact symmetries and conservation laws of some equations in gas dynamics
p. 154-156

Sommaire du Fascicule no. 4

Sergei Borisovich Stechkin (on the occasion of his 70th birthday)
p. 5-6
Integral inequalities for algebraic polynomials on the unit circle
p. 7-18
Certain extremal problem in a~measure space
p. 19-28
A~bound on Fourier coefficients according to the Chrestenson--Levy system in ag-locally integral metric
p. 29-36
Jung constants of the $l_p^n$-spaces
p. 37-47
Approximation of periodic functions by Fejer--Zygmund means in various metrics
p. 48-57
Parametric approximation of piecewise analytic functions
p. 58-68
Growth of degrees of polynomial bases
p. 69-78
Parallelepipedal cubature formulas and perfect splines
p. 79-87
Error of the approximation by interpolation polynomials of small degrees on $n$-simplices
p. 88-99
Best approximation of certain classes of smooth functions on the real axis by splines of a~higher order
p. 100-109
Conjugate trigonometric polynomials
p. 110-114
Order of the best approximation of partial differential operators
p. 115-121
Properties of the sets that have a~continuous selection from the operator~$P^\delta$
p. 122-131
Inequalities of Kolmogorov type and estimates of spline interpolation on periodic classes~$W_2^m$
p. 132-139
A~difference scheme for the equation of gas dynamics which conserves the group properties of solutions
p. 140-151
On Jackson's theorems in~$L_2$
p. 152-157

Sommaire du Fascicule no. 5

Rate of approximation of orthogonal series by Riesz means
p. 3-14
Measure of solenoidal attractors of unimodal maps of the segment
p. 15-21
Construction of a~Fuchsian equation from a~monodromy representation
p. 22-34
The normal form of a~system, close to a~Hamiltonian system
p. 35-46
Linear problems of the dynamics of a~floating fluid. Existence theorems
p. 47-54
Dimension of spaces of harmonic functions
p. 55-61
Groups of symmetries of geodesic flows on closed surfaces
p. 62-67
The inverse to a~$c$-continuous operator
p. 68-71
Symmetries on the Julia set
p. 72-79
Generalization of the Paley--Wiener theorem in weighted spaces
p. 80-87
Completeness of a~system of exponentials on the halfline
p. 88-96
Factorization of a~convolution operator and inverse problems for difference equations
p. 97-108
Scorza--Dragoni's theorem for multi-valued mappings with variable domain of definition
p. 109-120
Factorization of smooth measures
p. 121-127
Combined approximations of some transcendental numbers
p. 128-137
Eigenvalues of a~boundary value problem in the open right half-plane
p. 138-140
The Cauchy problem for a~second-order equation with a~nondensely defined operator
p. 140-142
Evolution of zeros and extreme points of a~trigonometric polynomial as its extreme value varies
p. 143-146
The Cauchy problem in classes of increasing functions for a~diffusion equation that slows with increasing density
p. 146-148
A~hyperbolic zeta function of general form
p. 148-150
Interaction of short waves with nonlinear phases in weakly nonlinear media with small viscosity
p. 150-153
Periodic solutions of a~first-order elliptic system
p. 153-155
An analogue of the Kovalevskaya theorem for linear evolution equations with constant coefficients
p. 156-157

Sommaire du Fascicule no. 6

Local time of a~random walk up to the first passage to the semiaxis
p. 3-9
Approximation of Sobolev classes of functions by sums of products of functions of fewer variables
p. 10-21
Generalization of a~theorem of Kotzig and a~prescribed coloring of the edges of planar graphs
p. 22-28
The complex Maslov germ generated by a~linear connection
p. 29-37
A~sufficient condition for the continuity of the spectrum of a~discrete Schr\"odinger operator
p. 38-46
Uniqueness theorem for $CR$-functions on generating $CR$-manifolds
p. 47-50
Canonical Maslov operator on Lagrangian manifolds with Hilbert model
p. 51-60
Jointly absolutely normal numbers
p. 61-71
Criterion for quasi-power basis and its applications
p. 72-78
Lower bounds of the complexity of symmetric boolean functions of contact-rectifier circuits
p. 79-90
Weak nonlocalities in evolution equations
p. 91-97
Yet another method of enumerating unmarked combinatorial objects
p. 98-105
Constructivizable models with a~linear structure of algebraic reducibility
p. 106-111
On a~linearly quadratic problem of optimal control of a~stochastic Volterra equation
p. 112-117
Uniqueness classes for the solutions of the Cauchy problem for nonlinear degenerate parabolic equations
p. 118-125
Simultaneous approximations of exponentials by elements of fields of transcendence degree~1
p. 126-136
Two-dimensional Hermite interpolation
p. 137-139
Distribution of eigenvalues of polynomial pencils of pseudodifferential operators on a~compact manifold without boundary
p. 140-142
The Maslov index in infinite-dimensional symplectic geometry
p. 142-145
Asymptotics near a~turning point for a~second-order nonlinear equation
p. 145-146
Points of continuity of upper semicontinuous multivalued mappings
p. 147-148
Boundary smoothness of proper holomorphic mappings of strictly pseudoconvex domains
p. 149-150
On the asymptotic behavior of Chebyshev orthogonal polynomials of a~discrete variable
p. 150-152