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Izvestiya of Saratov University.
Mathematics. Mechanics. Informatics
ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)
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Mathematics
Estimates of Speed of Convergence and Equiconvergence of Spectral Decomposition of Ordinary Differential Operators
On Riescz Bases of Eigenfunction of 2-nd Order Differential Operator with Involution and Integral Boundary Conditions
Invariants on a Set of Reciprocal Iterated Exponential Power Coefficients
Quasi-polynomials of Capelli
Correctness of the Local Boundary Value Problem in a Cylindrical Domain for Laplace’s Many-dimensional Equation
The Solution of the Problem of Determining the Density of Heat Sources in a Rod
On the Distribution of the Numbers with Binary Expansions of a Special Type in Arithmetic Progressions
Operator Integration with an Involution Having a Power Singularity
Spectral Sequences of Fibre Tolerance Spaces
The Theorem on Equiconvergence for the Integral Operator on Simplest Graph with Cycle
Generalized Regular Systems of Differential Equations
On Numerical Approximation of Differential Polynomials
About Solvability of Integro-Differential Equation with Extended Stieltjes Integral
On Solvability of Certain Classes of Irregular the Second Order Variation Problems
Research of Stability for Extremal Rotation Surfaces
On Riesz Basises of the Eigen and Associated Functions of the Functional-Differential Operator with a Variable Structure
Recovering of a Mapping via Jacobi Matrix, Normalized Homogeneous Function
Expansions in Eigenfunctions of the n-th Order Differential Operator with Non-Regular Boundary Conditions
Equiconvergence Theorem for Expansions in Eigenfunctions of Integral Operators with Discontinuous Involution
About Nonsingularity of One Boundary Value Problem of Forth Order with Derivatives by Measure
Basis Conditions for Systems of Translates and Dilates of Functions in Lp-Spaces
Shape-Preserving Linear n-width of Unit Balls in C[0, 1]
An Analysis of Queueing Networks with Dynamic Routing Control
Method of Hermite Interpolation by Polynomials of the Third Degree on a Triangle Using Mixed Derivatives
Convergence of Multiple Vilenkin–Fourier Series in Lorentz Spaces
About Dirichle’s Rows whith Finite-Valued Multiplicative Coefficients, Satisfy the Riman’s Type Functional Equation
On the Binary Additive Problem
On Convergence of Riesz Means of the Expansions in Eigenfunctions of a Functional-Differential Operator on a Cycle-Graph
Exact Orders of Errors in Smooth Functions Approximations
On Recovering Differential Pencils on a Bush-type Graph
On Solvability of One Class of Urysohn Type Nonlinear Integral Equation on the Whole Line
A Minimal Non-extendable Partial Semigroup
CMS Operators Type B(1, 1) and Lie Superalgebra osp(3, 2)
Multipoint Differential Operators: „Splitting“ of the Multiple in Main Eigenvalues
Dini – Lipschitz Test on the Generalized Haar Systems
Bernstein Polynomials for a Standard Module Function on the Symmetric Interval
On a Quotient Topology in Topological Semigroups and Groups
Three-dimensional Homogeneous Spaces, Not Admitting Invariant Connections
Resolvent Approach to Fourier Method in a Mixed Problem for Non-homogeneous Wave Equation
Spectral Analysis of a Class of Difference Operators with Growing Potential
The Fourier Series of the Meixner Polynomials Orthogonal with Respect to the Sobolev-type Inner Product
Graphs with Contours in Multiresolution Analysis on Vilenkin Groups
On the L1-convergence of Series in Multiplicative Systems
On Convergence of Bernstein – Kantorovich Operators sequence in Variable Exponent Lebesgue Spaces
Sobolev Orthogonal Polynomials Generated by Meixner Polynomials
On a Limit Value of a Remainder of the Lagrange Constant Corresponding to the Lagrange Trigonometrical Polynomial
On Operators with Discontinuous Range
Necessary and Sufficient Conditions for the Uniform on a Segment Sinc-approximations Functions of Bounded Variation
On the Solvability of the Discrete Analogue of the Minkowski – Alexandrov Problem
Iterative Procedure of Constructing Optimal Solving in the Minimax Problem of Control for Singularly Perturbed System with Delay with Geometric Constraints
Admissible Hypercomplex Structures on Distributions of Sasakian Manifolds
Orthogonal Shift Systems in the Field of p-adic Numbers
Affine System of Walsh Type. Completeness and Minimality
Equilibrium in Games with Ordered Outcomes
On Determinant Zeros of Boolean Matrices
Set-Theoretical Approach to the Structure of Concept Generators
Algebras of Continuous Multifunctions
The Green’s Relations and the Generalized Green’s Relations on Certain Transformation Semigroups
Structure of Mixed Problem Solution for Wave Equation on Compact Geometrical Graph in Nonzero Initial Velocity Case
On Homomorphisms of Endomorphism Semigroups of Hypergraphs
On Iterative Method of Constructing Optimal Control for Singularly Perturbed Systems with Delay
Obstructions to Embedding of Matrix Algebra Bundles into a Trivial One
Method for Analysis of Queueing Networks with Dynamic Control of Service Rates
On Varieties of Partially Ordered Semigroups with Operations of Cylindrification
Recovering Differential Operators on a Bush-Type Graph
About Asymptotics of Chebyshev Polynomials Orthogonal on an Uniform Net
Multiple Non-Completeness for the System of Eigenfunctions of a Class of the Pencils of Ordinary Differential Operators
On the Uniqueness of Series with Respect to Characters of Dyadic Groups
Interpolation by the Simplest Fractions
Two-Mode Branching Extremals of Smooth Functionals with Homogeneous Features of the Sixth Order in Minima Points
On the Diffusion and Slow Convection in Slightly Compressible Viscous Fluid
Nonseparable Wavelets of Meyer Type in Besov and Lizorkin – – Triebel Spaces
About the Solution of Nondegenerate Four-Element Boundary Value Problem of Karleman Type for Bianalytical Functions in Circle
On Stilties Differential on Time Scales
Projection Description of Bessel Sequences
Same Properties r-fold Integration Series on Fourier – Haar System
Certain Case of the Riemann–Hilbert Boundary Value Problem with Peculiarities of Coefficients
On Properties of the Eigenfunctions of a Quadratic Pencil of the Second Order Differential Operators
Factoring of an Entire Function into Two Equivalent Functions
Haar Series on Compact Zero-Dimensional Abelian Group
Extremal Rational Functions on Several Arcs of the Unit Circle with Zeros on these Arcs
Solution of Integral Equations via Resolvents of Simplest Differential Operators
On Uniform Convergence of Transformations of Fourier Series on Multiplicative Systems
Harmonic Analysis of Periodic at Infinity Functions from Stepanov Spaces
The Solution of the Homogeneous Boundary Value Problem of Riemann with Infinite Index of Logarithmic Order on the Beam by a New Method
On Problem of Abstract Characterization of Universal Hypergraphic Automata
Extended Structures on Codistributions of Contact Metric Manifolds
To Chang Theorem. II
Approximate Solution of an Optimal Control Problem with Linear Nonhomogeneous Control System in Hilbert Space
On Analogue of Jordan – Dirichlet Theorem about the Convergence of the Expansions in Eigenfunctions of a Certain Class of Differential-Difference Operators
Symmetry Axes of Planar Polynomial Differential Systems
Аbout Some Boundary Problems in the Semispace for a Class of Pseudo-Differential Equations with Degeneracy
On Multiple Completeness of the Root Functions for a Class of the Pencils of Differential Operators
Integrability of a Partial Case of the Lowner Equation
Asymptotic Properties of Polynomials pˆα,βn (x), Orthogonal on Any Sets in the Сase of Integers α and β
Cohomology Rings of Semicubecal Sets
The M.A. Lavrentiev Inverse Problem on Mapping of Half-Plane Onto Polygon with Infinite Set of Vertices
The Approached Calculation of Eigenvalues of the Discrete Operator by Means of Spectral Traces of Resolvent Degree
About the Congruences of Two-Generated Monoid
The Problem of Convergence in Point Trigonometric Interpolation Process of Lagrange
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