Geodesic

Sommaire du Fascicule no. 1

Retractable and coretractable abelian groups
p. 3-11
About the methods of biological resourse extraction, that provide the maximum average time benefit
p. 12-24
Unsteady coupled elastic diffusion processes in an orthotropic cylinder taking into account diffusion fluxes relaxation
p. 25-37
Global stability of systems of nonlinear It\^{o} differential equations with aftereffect and N.V. Azbelev's $W$-method
p. 38-56
Characterization of weighted mixed norm spaces of analytic functions defined in terms of conditions on the Fourier coefficients
p. 57-64
The influence of external environment resistance coefficient on population dynamics
p. 65-73
Relative elementary definability of the class of universal graphic semiautomata in the class of semigroups
p. 74-84
Computable linear orders and the Ershov hierarchy
p. 85-89

Sommaire du Fascicule no. 2

On the Keldysh problem for mixed type equation with two singular lines
p. 3-17
On some aspects of the Kegel-Wielandt $\sigma$-problem
p. 18-28
A posteriori stopping in iteratively regularized Gauss--Newton type methods for approximating quasi-solutions of irregular operator equations
p. 29-42
Inequalities refining relationships between mixed moduli of smoothness in $L_1$- and $L_q$-metrics
p. 43-61
Conditional correctness of the initial-boundary value problem for a system of high-order mixed-type equations
p. 62-75
On a class of local groups and their representations
p. 76-82
On a primality test for natural numbers
p. 83-87

Sommaire du Fascicule no. 3

Isomorphism and diffeomorphism of semisimple Lie Groups
p. 3-12
On Visser's inequality concerning coefficient estimates for a polynomial
p. 13-20
On the achievable level of accuracy in solving abstract ill-posed problems and nonlinear operator equations in Banach space
p. 21-27
Complete solution of a class of differential pursuit games with integral constraint and impulse control
p. 28-37
A new application of $(\phi,\delta)$-monotone sequences
p. 38-43
Conjugate rational Foutier--Chebyshev operator and its approximation properties
p. 44-60
Exact inequalities between the best polynomial approximations and averaged norms of finite differences in the $B_{2}$ space and widths of some classes of functions
p. 61-70
Invariants of coverings of Serre bundles
p. 71-84
On some properties of sequences of traces of powers of matrices
p. 85-88
Mechanical plane problems of the straight beams with deformable protect fixed section of a finite length
p. 89-96

Sommaire du Fascicule no. 4

Boundary value problem for a fourth-order equation of parabolic-hyperbolic type with multiple characteristics, whose slopes are greater than one
p. 3-14
The method of total approximation of the solution of the Dirichlet problem for a multidimensional Sobolev-type equation
p. 15-26
A boundary value problem with conjugation conditions for a degenerate the equations with the Caputo fractional derivative
p. 27-36
On a priori estimate and the existence of periodic solutions for a class of systems of nonlinear ordinary differential equations
p. 37-48
Integral representation of the Mittag-Leffler function
p. 49-66
On the existence of solutions to boundary value problems for nonlinear equilibrium equations of shallow anisotropic shells of Timoshenko type in Sobolev space
p. 67-83
On the boundedness problem of maximal operators
p. 84-94

Sommaire du Fascicule no. 5

Skew minimal surfaces supported by two triangular frames
p. 3-25
Meyer points and refined Meyer points for arbitrary harmonic functions
p. 26-32
Theories in propositional logiс and the converse of substitution
p. 33-41
Computational complexity of the word problem in modal and pseudo-Boolean algebras
p. 42-60
Massera problem for some nonautonomous functional differential equations of neutral type with finite delay
p. 61-73
Iterative method for solving a non-linear edge problems with a point source
p. 74-79
Three-dimensional nonunimodular Lie groups with a Riemannian metric of an invariant Ricci soliton and a semi-symmetric metric connection
p. 80-85
Approximation of the Lebesgue constant of the Fourier operator by a logarithmic function
p. 86-93

Sommaire du Fascicule no. 6

Relative demicompactness properties for exponentially founded $C$-semigroups
p. 3-12
Realization functionals and description of a modulus of smoothness in variable exponent Lebesgue spaces
p. 13-25
Instances of small size with no stable matching for three-sided problem with complete cyclic preferences
p. 26-36
Integral formulas of the type of Carleman and B. Ya.~Levin for meromorphic and subharmonic functions
p. 37-53
Problem with an analogue of the Bitsadze--Samaraskii condition for one class of degenerate hyperbolic equation
p. 54-59
On the nonlocal problem for a hyperbolic equation with a parabolic degeneration
p. 60-66
Boundary-value problem for a differential-algebraic system with constant delay with variable rank of leading coefficient matrix
p. 67-78
Direct and inverse theorems for the approximation of functions by algebraic polynomials and splines in the norms of the Sobolev space
p. 79-86
Weak solvability of non-linearly viscous Pavlovsky model
p. 87-93

Sommaire du Fascicule no. 7

The inverse problem for generalized contraharmonic means
p. 3-9
Krasnosel'skii canonical domains and the existence of non-negative Poisson bounded solutions
p. 10-17
A boundary value problem for a mixed type equation with singular coefficients
p. 18-29
Aggregation of strict order fuzzy relations
p. 30-43
What can be expected from the image of $\sigma$-derivations on Banach algebras?
p. 44-57
A problem with mixed boundary conditions for a singular elliptic equation in an infinite domain
p. 58-72
The expression of elliptic functions in terms of Jacobi functions
p. 73-78
Solvability of the initial-boundary value problem for the high-order Oldroyd model
p. 79-85
Spectral estimates for fourth-order differential operator with periodic coefficients
p. 86-92

Sommaire du Fascicule no. 8

A nonlocal problem for fourth-order loaded hyperbolic equations
p. 3-23
On some properties of ultrametric meromorphic solutions of difference equations of Malmquist type
p. 24-33
Regularization of the total equation with holomorphic coefficients generated by a triangle
p. 34-38
On the Darboux problem for a hyperbolic system of equations with multiple characteristics
p. 39-45
A version of the Malliavin--Rubel Theorem on entire functions of exponential type with zeros near the imaginary axis
p. 46-55
Multiperiodic solution of the initial-boundary value problem for integro-differential equation of parabolic type
p. 56-68
On conditions for the absolute stability of one difference scheme for some multidimensional differential-algebraic systems
p. 69-80
Chaotic topological foliations
p. 81-86
On a representation of a semigroup $C^*$-algebra as a crossed product
p. 87-92
On a statistical criterion for the heterogeneity of second-order moments
p. 93-96

Sommaire du Fascicule no. 9

Associated operator Legendre function and the incomplete Cauchy problem
p. 3-13
A boundary value problem with a conormal derivative for the mixed type equation of second kind with a conjugation condition of the Frankl type
p. 14-29
About the criteria of asymptotic stability of dynamical systems
p. 30-38
(Anti) self-dual Einstein metrics of zero signature, their Petrov classes and connection with Kahler and para-Kahler structures
p. 39-53
Metric properties of the Rayleigh--Ritz operator
p. 54-63
The Koolen-Park bound and distance-regular graphs without $m$-clavs
p. 64-69
A problem with displacement on internal characteristics in an unbounded domain for the Gellerstedt equation with a singular coefficient
p. 70-82
The Dirichlet Problem for a mixed-type equation with fractional derivatives
p. 83-94

Sommaire du Fascicule no. 10

On finitely based $\mathrm{T}$-spaces of free Lie nilpotent algebras of rank~$2$
p. 3-10
Induced homeomorphism and Atsuji hyperspaces
p. 11-21
Computability and universal determinability of negatively representative models
p. 22-32
On a class Noether theory of two-dimensonal Singular integral equations of the Michlin--Calderon--Zygmund over a bounded domain
p. 33-41
Fregman--Lindelof-type theorems for biharmonic functions
p. 42-65
On a class of Holder matrix functions of the second order admitting an effective factorization
p. 66-72
Completeness criterions for a class of reducubilities
p. 73-78
Estimating the measure of $k$-fold intersections of $k$-fold stretched intervals
p. 79-85
Forced and parametric vibrations of a composite plate caused by its resonant bending vibrations
p. 86-94

Sommaire du Fascicule no. 11

On the integration of the periodical Camassa--Holm equation with an integral type source
p. 3-13
On Lockett conjecture for $\sigma$-local Fitting classes
p. 14-20
Polyelement functional equations related to the Carleman kernel and their applications
p. 21-37
A finite difference scheme on a graded mesh for solving Cauchy problems with a fractional Caputo derivative in a Banach space
p. 38-51
The geometry of one-dimensional and spatial Hardy type inequalities
p. 52-88
On the uniform convergence of the expansion of a function in Fourier--Bessel range
p. 89-96
On some properties of fuzzy expectations and nonlinear fuzzy expectations of fuzzy-random variables
p. 97-109
On the best polynomial approximation in Hardy space
p. 110-123
Nonuniformity of downwards density in the $n$-computably enumerable Turing degrees
p. 124-131

Sommaire du Fascicule no. 12

Classical solutions for the coupled system gKdV equations
p. 3-16
Controlled $g$-atomic subspaces for operators in Hilbert spaces
p. 17-33
Stability criterion for linear differential equations with a delayed argument
p. 34-56
The Tricomi problem for a mixed type differential-difference equation in an unbounded domain
p. 57-67
Reducibility by means of almost polynomial functions
p. 68-78
Some remarks and results on $h$-almost Ricci solitons
p. 79-83
A problem of generators for a ring of entire functions several complex variables
p. 84-90
Fully inert subgroups of completely decomposable groups, having homogeneous components of the final rank
p. 91-100
The Markoff theory and the commutator subgroup $SL(2,Z)'$
p. 101-112
Identification of the potential coefficient in the wave equation with incomplete data: a sentinel method
p. 113-122
On a conbined primality test
p. 123-129