Geodesic

Sommaire du Fascicule no. 1

Reduction of computable and potentially computable numerations
p. 3-9
Infinite nonabelian groups with minimal condition for non-normal subgroups
p. 11-18
On the distribution of maximal sublattices
p. 19-24
Double trigonometric sums and their application in approximating rational sums
p. 25-34
Approximation of differentiable functions by Fourier--Hermite sums
p. 35-46
On the best approximation in the metric of $L$ to certain classes of functions by Haar-system polynomials
p. 47-54
Representation of Cauchy type integrals
p. 55-63
Self-adjoint abstract differential operators
p. 65-72
Semidegenerate algebras in a~Pontryagin space
p. 73-80
Admissibility of the estimate of least squares. Unusual property of the normal law
p. 81-89
Ritz method for equations with small parameters for higher derivatives
p. 91-96
Results concerning the nature of the continuity of solutions of parabolic equations and some of their applications
p. 97-108
Construction of an~asymptotic expansion for the solution of a~linear system of equations of neutral type with a~small delay in the absence of a~boundary layer
p. 109-113
Uniqueness theorem for convex surfaces
p. 115-117
Symplectic and quasisymplectic Galois spaces
p. 119-123
Representations of concrete categories in the category of sets
p. 125-127

Sommaire du Fascicule no. 2

An embedding theorem for a~limiting exponent
p. 129-138
On an~integral inequality
p. 139-148
Approximation of continuous functions by broken lines
p. 149-160
On Appell polynomials
p. 161-172
A~class of completely continuous operators in a~Hilbert space of entire functions of exponential type
p. 173-179
A~symplectic space with $p$-groups of operators over a~field of characteristic~$p$
p. 181-185
Three theorems on linear ordered periodic semigroups
p. 187-196
On the splitting of groups of central group extensions
p. 197-200
The number of linear orders on a~field
p. 201-211
On the Redfield-Read combinatory algorithm
p. 213-223
Cohomologies of maximal order of simple central algebras
p. 225-231
Diameter of the set of midpoints of chords of a~bounded closed set
p. 233-236
Differencing scheme for a~differential equation with a~small parameter affecting the highest derivative
p. 237-248
Systems of difference equations with localized effect of right side
p. 249-255

Sommaire du Fascicule no. 3

Reconstruction of a~function from the modulus of its Fourier transform
p. 257-262
Singular points of power series
p. 267-276
Estimate of growth of Lebesgue functions of linear methods of summation
p. 277-286
Yet another formula defining laguerre polynomials
p. 287-288
Linear degenerate parabolic equations of arbitrary order with a~finite region of dependence
p. 289-294
The Cauchy problem for some classes of quasi-linear parabolic equations
p. 295-300
On a~theorem of S.\,N.~Bernshtein
p. 301-307
Maximal length of circuit in a~unitary $n$-dimensional cube
p. 309-319
Subalgebras of finite codimension
p. 321-328
Basis sequences in a~Montel space
p. 329-334
Subgroups between special linear groups over a~ring and its subring
p. 335-345
On the theory of finite groups
p. 347-360

Sommaire du Fascicule no. 4

Necessary and sufficient conditions for the linearity of transformations which preserve cones
p. 361-369
Infinitely small transformations preserving the curvature of a~Riemannian space
p. 371-380
On group rings of abelian $p$-groups of any cardinality
p. 381-392
Topological $FC$-solvable groups with maximality and minimality conditions for the subgroups
p. 393-400
On the immersion of topological semigroups in topological groups
p. 401-409
Iterations of homogeneous polynomial transformations with positive coefficients
p. 411-416
The problem of conformal transformations of a~circle into nonoverlapping regions
p. 417-424
On the extension of a~generalized differentiation operator
p. 425-436
Fatou's example
p. 437-441
A~central limit theorem for strongly multiplicative systems of functions
p. 443-450
On the order of partial sums of general orthogonal series
p. 451-462
Inequalities for the norms of derivatives in the spaces $L_{p,\varphi}$
p. 463-473
Best quadrature formulas on classes of differentiable periodic functions
p. 475-481
Estimates of solutions of some systems of differential equations with large retardation
p. 483-488
Quasi-random dynamical systems
p. 489-498
Partitions and centralizers in the theory of finite groups
p. 499-511

Sommaire du Fascicule no. 5

Some formulas arising in conformal mapping of a~Riemann space onto a~Euclidean space and corollaries following from them
p. 513-520
Simple examples of groups with unsolvable word problem
p. 521-532
Self-injective rings and endomorphisms of free modules
p. 533-540
Remarks on V.\,P.~Elizarov's article, ``two properties of associative rings''
p. 541-544
Improvement of remainder term for the divisors problem
p. 545-554
Invariant random boolean fields
p. 555-566
On sequences of Fourier coefficients of functions of H\"older classes
p. 567-572
On the best approximation of the differentiation operator on the half-line
p. 573-582
Saturation theory converse problem
p. 583-590
On the convergence of linear operators of the class $S_m$
p. 591-598
On the problem of G.~Targonski concerning the relation between the kernel of a~normal Carleman operator and the kernel of the adjoint operator
p. 599-606
Metrization of the space of all simple rings in the region of family $\mathfrak B$
p. 607-618
Permissible values of coefficients of polynomials in uniform approximation of continuous functions
p. 619-625
Estimate of the remainder of a~cubature formula for a~hypersphere
p. 627-632
Conditions for non-oscillation of singular linear differential equations of second order
p. 633-639

Sommaire du Fascicule no. 6

Locally compact groups with complementary closed subgroups
p. 641-649
On the conditional degree of satisfiability of logical formulas
p. 651-662
On directed transformations of formulas
p. 663-668
On the conditions that the net method for the Laplace equation converges with speed~$h^2$
p. 669-679
On a~boundary problem generated by a~self-adjoint Sturm--Liouville differential operator on the entire real axis
p. 681-692
Markov splitting for U-flows in three-dimensional manifolds
p. 693-704
Asymptotic distribution of sequences with random indices
p. 705-712
On orthogonalization of bases
p. 713-724
On upper bounds of Fourier--Walsh coefficients
p. 725-736
On the extension of a~sequence of functions to a~complete orthonormal system
p. 737-747
On orthogonal bases in $L$
p. 749-758
Differentiation operator and series of Dirichlet type
p. 759-766
A~refinement of two effective inequalities of A.~Baker
p. 767-769
An~analytic form of differential equations
p. 771-778