Математика список научных статей
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Strongly Algebraically Closed MV -algebras
The aim of this paper is to fully characterize strongly algebraic closed MV-algebras, extending a result of Lacava. Moreover we provide some computation relating orbit algebras, Wajsberg algebras and Lukasiewicz semirings.
2023 / Ali MolkhasiScopusВАКRSCIESCI -
A Logarithmic Barrier Approach Via Majorant Function for Nonlinear Programming
In this paper, we are interested in solving an optimization nonlinear programming problem using a logarithmic barrier interior point method, in which the penalty term is taken as a vector r ∈ Rn +. The descent direction has been calculated using a classical Newton method, however the step size has...
2023 / Boutheina Fellahi, Bachir MerikhiScopusВАКRSCIESCI -
Series of Hypergeometric Type and Discriminants
The monomial of solutions of a reduced system of algebraic equations are series of hypergeometric type. The Horn–Karpranov result for hypergeometric series is extended to the case of series of hypergeometric type.
2023 / Quang Khanh PhanScopusВАКRSCIESCI -
To the Question of Rigorous Axiomatization of Thermodynamics
An attempt is made in the article to rigorously axiomatize thermodynamics, i.e., to construct such a presentation of it in which its entire presentation follows from several axioms. At the same time, it turns out that the classical point of view, which consists in the fact that the entire building...
2023 / Kirill A. SidorovScopusВАКRSCIESCI -
Mathematical Modeling of Cathodic Zinc Electroextraction Processes
Numerical optimization techniques are widely used for solving applied problems in economics, as well as problems related to the optimization of production processes. In this paper, the Hooke-Jeeves method of direct search and numerical optimization are used to solve the problem of inverse kinetics...
2023 / Lenar N. Kashapov, Nail F. Kashapovy, Violetta Yu. Chebakovaz, Evgenia V. ChebakovaScopusВАКRSCIESCI -
Contact Mappings of Jet Spaces
In this paper we consider mappings of jet spaces that preserve the module of canonical Pfaffian forms, but are not generally invertible. These mappings are called contact. A lemma on the prolongation of contact mappings is proved. Conditions are found under which these mappings transform solutions...
2023 / Oleg V. KaptsovScopusВАКRSCIESCI -
Elasto-plastic Twisting of a Two-layer Rod Weakened by Holes
Under study is the elasto-plastic twisting of a multiply-connected two-layer prismatic rod under the influence of a couple of forces with a given moment. It is assumed that the rod consists of two layers. Either layer has its own elastic properties, but the plastic characteristics of both layers...
2023 / Sergei I. Senashov, Irina L. Savostyanova, Olga N. CherepanovaScopusВАКRSCIESCI -
Criterion of Global Admissibility for Logic IPC
We describe globally admissible inference rules for logic IPC.
2023 / Vitaliy V. RimatskiyScopusВАКRSCIESCI -
Two Heuristic Algorithms for RCPSP with NPV Criterion
The resource constrained project scheduling problem (RCPSP) with the criterion of maximizing the net present value (NPV) is considered. We propose two heuristic algorithms for RCPSP based on idempotent algebra methods. To assess the quality of the algorithms, a zero-one integer linear programming...
2023 / Aleksandr M. Bulavchuk, Daria V. SemenovaScopusВАКRSCIESCI -
An Inverse Problem for Pseudoparabolic Equation with the Mixed Boundary Condition
In this paper we study the inverse problem on identification of the leading coefficient in the pseudoparabolic equation. The problem involves the mixed boundary condition. The unknown coefficient is recovered by additional integral boundary data. The existence and uniqueness of the strong solution...
2023 / Anna Sh. LyubanovaScopusВАКRSCIESCI -
Uniform Estimates for Mittag-Leffler Functions with Smooth Phase
In this paper we consider the problem on uniform estimates for Mittag–Leffler functions with the smooth phase functions having singularities D∞, D ± 4 and Ar. The generalisation is that we replace the exponential function with the Mittag–Leffler-type function, to study oscillatory type integrals.
2023 / Akbar R. SafarovScopusВАКRSCIESCI -
Preorder on the Set of Analytic Functions
In the paper, we study a preorder, which can be naturally defined on the set of all analytic functions of two complex variables with the help of superpositions of analytic functions of one variable.
2023 / Maria A. StepanovaScopusВАКRSCIESCI -
On the Solvability of Burgers-type Equation with Special Type of Non-linearity
A one-dimensional parabolic Burgers equation of special form with Cauchy data is considered in this paper. To prove the theorem on the solvability of this problem the method of weak approximation developed by Yu.Ya. Belov is used. The results of this paper enhance the results obtained in [2].
2023 / Igor V. Frolenkov, Roman V. Sorokiny, Ivan E. ZubrovScopusВАКRSCIESCI -
Linear Autotopism Subgroups of Semifield Projective Planes
We investigate the well-known hypothesis of D. R. Hughes that the full collineation group of non-Desarguesian semifield projective plane of a finite order is solvable (the question 11.76 in Kourovka notebook was written down by N. D.Podufalov). This hypothesis is reduced to autotopism group that...
2023 / Olga V. Kravtsova, Daria S. SkokScopusВАКRSCIESCI -
On the Closedness of Carpets of Additive Subgroups Associated With a Chevalley Group Over a Commutative Ring
Let U = { Ur | r ∈ Φ} be a carpet of additive subgroups of type Ф over an arbitrary commutative ring K. A sufficient condition for the carpet A to be closed is established. As a corollary, we obtain a positive answer to question 19.63 from the Kourovka notebook and a confirmation of one conjecture ...
2023 / Yakov N. NuzhinScopusВАКRSCIESCI -
Mellin Transforms for Rational Functions with Quasi-elliptic Denominators
The paper deals with residue representations of n–dimensional Mellin transforms for rational functions with quasi-elliptic denominators. These representations are given by integrals over (n - 1)dimensional relative cycles. The amount of representations (or cycles) equals to the number of facets of...
2023 / Irina A. Antipova, Timofey A. Efimov, Avgust K. TsikhScopusВАКRSCIESCI -
On the Non-standard Interpolations in Cn and Combinatorial Coefficients for Weil Polyhedra
Multidimensional non-standard interpolation has been recently presented in an article by D. Alpay and A.Yger. We are talking about algebraic interpolation where discrete roots of a system of polynomial equations serve as nodes. With the help of the Grothendieck residue duality, the problem of...
2023 / Matvey E. Durakov, Roman V. Ulvert, August K.TsikhScopusВАКRSCIESCI -
Использование (0, μ)-свернутого произведения многомерных матриц для решения задач теории графов
Решения прикладных задач теории графов применяются в микроэлектронике, логистике, при проектировании систем высокой доступности и компьютерных сетей. Однако существующие решения имеют недостаточную масштабируемость, вследствие чего применяются только для узких вариаций задач: поиска кратчайшего...
2023 / Макаров Александр Ильич, Мунерман Виктор ИосифовичВАКRSCI -
LEVERAGING AUXILIARY VARIABLES: ADVANCING MEAN ESTIMATION THROUGH CONDITIONAL AND UNCONDITIONAL POST-STRATIFICATION
This article presents a novel class of estimators designed for post-stratification to estimate the mean of a study variable using information from auxiliary variables. Through a rigorous examination of bias and Mean Square Error (MSE), we demonstrate the potential to improve estimation accuracy up...
2023 / G.R.V. Triveni, Faizan Danish -
EXPLORING THE LENGTH BIASED TORNUMONKPE DISTRIBUTION: PROPERTIES, ESTIMATIONS AND PRACTICAL APPLICATIONS
In this study, we introduce a novel extension of the Tornumonkpe distribution, known as the length biased Tornumonkpe distribution. This distribution holds particular significance as it belongs to the family of weighted distributions, specifically the length biased variant. Through an in-depth...
2023 / D. Vedavathi Saraja, B. Jayakumar, Madhulika Mishra, Priya Deshpande, C. Subramanian, Rashid A. Ganaie, Aafaq A. Rather, Bilal Ahmad Bhat