Geodesic

Sommaire du Fascicule no. 1

Hypergeometric Siegel functions and $E$-functions
p. 3-14
Modules over commutative semiprime rings
p. 15-18
Groups satisfying the weak minimum and maximum conditions for subnormal subgroups
p. 19-30
Occurrence problem for braid groups $\mathfrak{B}_{n+1}$ with $n+1\geqslant5$
p. 31-33
Functions of noncommuting operators that generate a graded Lie algebra
p. 35-44
Fourier coefficients of functions that are integrable in the sense of a generalized integral
p. 45-54
Inverse problem for a parabolic equation
p. 55-62
Systems of vectors in Euclidean space and an extremal problem for polynomials
p. 63-74
Number of admissible linear orderings of a partially ordered set as a function of its incomparability graph
p. 75-82
Local Tur\'an property for $k$-graphs
p. 83-94
Relations between best approximations of functions of two variables
p. 95-106
An iterative projection method
p. 107-116
Orders of coapproximation of functions by algebraic polynomials
p. 117-130
Asymptotic expansions in the Poisson limit theorem for large excursions of stationary Gaussian sequences
p. 131-144
An estimate for the rate of convergence in the central limit theorem in a real separable Hilbert space
p. 145-153

Sommaire du Fascicule no. 2

Connection between the 2-length and the derived length of a Sylow 2-subgroup of a finite solvable group
p. 161-170
Semiperfect rings with nilpotent quasiregular group
p. 171-180
Variation of the norms in the problem of best approximation
p. 181-196
Computation of indefinite integrals involving certain special functions
p. 197-200
Estimates and asymptotic formulas for generalized Faber polynomials in two variables
p. 201-209
Mean property for the heat-conduction equation
p. 211-223
Description of the self-adjoint extensions of quasiregular operators generated by differential expressions with two terms
p. 225-233
Necessary and sufficient conditions for quasipower basicity of certain systems of regular functions
p. 235-242
Manifolds of nonpositive curvature with small volume
p. 243-252
Bonnet's theorem for geometric structures
p. 253-264
$K$-algebras and $K$-spaces of constant type with indefinite metric
p. 265-278
Affine connections of second order
p. 279-290
Small deviations of Gaussian process
p. 291-301
An extremal problem on partition of numbers
p. 303-307
Multidimensional Jackson theorem in~$L_2$
p. 309-315

Sommaire du Fascicule no. 3

Varieties of nilpotent $TS$-loops
p. 321-334
Equivalent definitions of a perfect system and some of its properties
p. 335-350
One class of Abelian groups
p. 351-358
Embeddability of an $FC$-group in the direct product of certain finite groups and a torsion-free Abelian group
p. 359-379
Extension of multiplications on a mixed Abelian group of countable rank
p. 375-379
Approximation of free groups with respect to conjugacy
p. 381-385
Inequalities for generalized areas for multivalent conformal, mappings of domains with circular cuts
p. 387-395
Liouville's theorem for degenerate elliptic and parabolic equations
p. 397-408
Operators commuting with integration in spaces of functions analytic in simply connected domains
p. 409-419
Approximation of functions in domains with a quasiconformal boundary
p. 421-430
Best one-sided approximation of certain classes of functions
p. 431-454
Problems of pursuit and evasion in differential games
p. 455-477

Sommaire du Fascicule no. 4

Factorizations of polycyclic groups
p. 481-490
Factor group of a direct product of Abelian groups by their direct sum
p. 491-501
Series with respect to the system $\{f(\lambda_nz)\}$
p. 503-516
Multipliers of uniform convergence of certain classes of power series
p. 517-524
A property of the Taylor coefficients
p. 525-527
Lacunary trigonometric series and complementarity in~$L_p$
p. 529-538
Certain estimates of approximation of functions by Cesаro means of Walsh--Fourier series
p. 539-547
Norming subspaces in certain adjoint Banach spaces
p. 549-555
Existence of a linear selector of a superlinear multivalued mapping
p. 557-566
Relations in the homeotropy group of a complete pretzel and the group of plat braids
p. 567-575
Differentiability of the best approximation operator
p. 577-596
Approximation of functions from the Lipschitz class by algebraic polynomials
p. 597-602
A problem of extremal interpolation
p. 603-622
Approximation of probability measures by convex combinations of measures of spherically invariant processes
p. 623-631
From editor

Sommaire du Fascicule no. 5

Generalized Fourier sine series
p. 641-657
Chebyshev centers and $\varkappa$-normal spaces
p. 659-672
Conditions for riesz means of spectral resolutions to be a basis in $L_p(\mathbf R^n)$
p. 673-684
Local structure of a completely integrable differential system with singularities
p. 685-690
Extremal geometric constants
p. 691-709
Approximation of functions of several variables by de la Vall\'ee Poussin rectangular sums
p. 711-730
Approximation of a differentiation operator
p. 731-742
Approximation with interpolation by splines of arbitrary deficiency
p. 743-748
The Kolmogorov diameter of the intersection of classes of periodic functions and of finite-dimensional sets
p. 749-760
Precise constants in inequalities of Jackson type
p. 761-769
Distribution of certain functionals of spacings in a scheme of series
p. 771-783
A class of submanifolds of homogeneous reductive spaces
p. 785-791
A supplement to the method of successive approximations
p. 793-795

Sommaire du Fascicule no. 6

Fundamental units of cubic fields of positive discriminant
p. 801-812
Modules over hereditary orders
p. 813-816
Uniqueness of an algebraic polynomial of best approximation in the~$L_1$ metric
p. 817-828
Classification of B\"acklund transformations of second-order partial differential equations
p. 829-842
Properties of functions connected with the behavior of poles of a Pad\'e approximation
p. 843-848
Divergence of the Fourier series of compositions of continuous functions
p. 849-858
$\alpha$-Convexity of order~$\beta$ of the class of all regular univalent functions in a circle
p. 859-866
A criterion for the coincidence of extensions, corresponding to Dirichlet's and Neumann's problems, of an elliptic operator
p. 867-875
Equivalence of rearrangements of the Haar system in~$L_1$
p. 877-885
Uniform convergence and Riesz summability of spectral resolutions
p. 887-894
Complexity of computable functions for a generalized storage measure
p. 895-905
Finite approximability of the~$I^\Delta$ calculus and the existence of an extension having no model
p. 907-916
An example of a nonmetrizable bicompactum in which every weakly extended subspace is countable
p. 917-921
Global convergence of iterative processes
p. 923-929
Proof of the van der Waerden conjecture regarding the permanent of a doubly stochastic matrix
p. 931-938
Obstructions to local equivalence of distributions
p. 939-947