Izvestiya of Saratov University.
Mathematics. Mechanics. Informatics
ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)

Mathematics

Substantiation of Fourier Method in Mixed Problem with Involution
Applicathion the Pontryagin‘s Maximum Principle to Optimal Economics Models
On Congruences of Partial n-ary Groupoids
Cramer’s Formulas for Systems of Linear Equations and Inequalities Over Boolean Algebra
Polynomials, Orthogonal on Non-Uniform Grids
Generalization of Method A. A. Dorodnicyn Close Calculation of Eigenvalues and Eigenvectors of Symmetric Matrices on Case of Self-Conjugate Discrete Operators
The Solvability of a System of Nonlinear Integral Equations of Hammerstein Type on the Whole Line
Harmonic Analysis of Operator Semigroups Slowly Varying at Infinity
Multiple Completeness of the Root Functions of the Pencils of Differential Operators with Constant Coefficients and Splitting Boundary Conditions
Martingale Inequalities in Symmetric Spaces with Semimultiplicative Weight
The Il’in Spectral Method for Determination of the Properties of the Basis Property and the Uniform Convergence of Biorthogonal Expansions on a Finite Interval
Necessary and Sufficient Condition for an Orthogonal Scaling Function on Vilenkin Groups
Nonlocal Boundary-Value Problems in the Cylindrical Domain for the Multidimensional Laplace Equation
Approximation of Continuous 2π-Periodic Piecewise Smooth Functions by Discrete Fourier Sums
On Inverse Problem for Differential Operators with Deviating Argument
Hermite Interpolation on a Simplex
Some Properties of 0/1-Simplices
Criterion for a Generalized Solution in the Class Lp for the Wave Equation to Be in the Class Wp^1
Non-reductive Homogeneous Spaces Not Admitting Normal Connections
An Asymptotic Relation for Conformal Radii of Two Nonoverlapping Domains
Classification of Prolonged Bi-metric Structures on Distributions of Non-zero Curvature of Sub-Riemannian Manifolds
Special Examples of Superstable Semigroups and Their Application in the Inverse Problems Theory
Polynomials Orthogonal with Respect to Sobolev Type Inner Product Generated by Charlier Polynomials
The Solution of the Inverse Boundary Value Problem for a Wing Profile, Located Close to Rectilinear Screen, in a New Setting
On Binary B-splines of Second Order
A Mixed Problem for a Wave Equation with a Nonzero Initial Velocity
Recovering singular differential pencils with a turning point
An extension of the ordering to the set of probability measures
On regularity of self-adjoint boundary conditions
On optimal choice of interpolation spline on triangular net
The Principle of Localization at the Class of Functions Integrable in the Riemann for the Processes of Lagrange – Sturm – Liouville
On Definability of Universal Graphic Automata by Their Input Symbol Semigroups
On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. I
Asymptotics of Solutions of Some Integral Equations Connected with Differential Systems with a Singularity
Quasi-Polynomials of Capelli. II
Rational interpolation processes on several intervals
Siegеl disks and basins of attraction for families of analytic functions
Isometry groups of Lobachevskian spaces, similarity transformation groups of Euclidean spaces and Lorentzian holonomy groups
On Recovering Differential Operators on a Closed Set from Spectra
Pieri Formulae and Specialisation of Super Jacobi Polynomials
An Inverse Spectral Problem for Sturm – Liouville Operators with Singular Potentials on Graphs with a Cycle
On Classic Solution of the Problem for a Homogeneous Wave Equation with Fixed End-Points and Zero Initial Velocity
Value Regions in Classes of Conformal Mappings
Analytic Embedding of Geometries of Constant Curvature on a Pseudosphere