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Математические методы в решении экономических задач : учебное пособие
Priority areas:
mathematics
Language:
Russian
Buchko A., Peresetsky A., HSE Economic Journal 2025 Vol. 29 No. 3 P. 383–406
In recent years cryptocurrencies have gained popularity: institutional and retail investors as well as different trading companies started positively looking at crypto assets. As a result, the convergence level between cryptocurrencies and the traditional markets has changed a lot. Stocks deserve close attention because they are a key asset for many investors. This article explores ...
Added: September 17, 2026
Blinova E., Sherbakova O., Learning and Instruction 2026 Vol. 106 Article 102432
Abstract
Background
Knowledge abstractness is one of the factors affecting learning outcomes, particularly in learning from multimedia texts. However, most previous studies on multimedia learning have focused on manipulating pictorial abstractness, while the role of text topic abstractness remains largely unexplored.
Aims
1. Examine how topic abstractness influences multimedia learning outcomes when pictorial abstractness remains constant. 2. Investigate how ...
Added: September 16, 2026
Kazakov A., Koryakin V., Safonov K. et al., Journal of Differential Equations 2026 Vol. 480 Article 114626
We study a family of one-dimensional maps that models the dynamics of a system of differential equations with a Lorenz attractor near a bifurcation curve where the system has a pair of homoclinic loops with zero separatrix value. Of particular interest is the region of the parameter plane where the map has a robust chaotic ...
Added: September 16, 2026
М.: Московский Политех, 2026.
Основной целью конференции является освещение проблем, связанных с внедрением технологий искусственного интеллекта в управление городским хозяйством города Москвы. Участниками были представлены инновационные решения для оптимизации использования ресурсов и городской инфраструктуры. Особое внимание было уделено решению задач прогнозирования и аналитического моделирования для повышения эффективности работы городских систем.
Тезисы докладов содержат разностороннее исследование теоретических и практических вопросов развития ...
Added: September 16, 2026
Abdullaev A., Sivaev S., Regional Research of Russia 2026 Vol. 16 No. 3 P. 518–530
The article examines the specific features of implementing regional programs of targeted social support for housing and communal services payments in Russia. The aim of the study is to identify differences between the federal subjects in key parameters of the program, targeting and coverage of households with housing subsidies, as well as in the results of ...
Added: September 16, 2026
Letellier C., Stankevich N., Houri S. et al., Chaos 2026 Vol. 36 No. 9 Article 093128
Toroidal chaos designates a chaotic solution that is structured in the neighborhood of a torus. For being chaotic, such a torus needs to be discontinuously fractalized to present a Cantor set, ensuring the great sensitivity to initial conditions required for chaos. A fractal is related to self-similarity and a non-integer dimension. In fact, although clearly ...
Added: September 16, 2026
Poddiakov A., / Series Social Science Research Network "Social Science Research Network". 2026. No. 7437658.
Clarity of knowledge and reasoning is necessary in many cases. Yet vagueness in scientific thinking related to surprise, curiosity, "ability to engage with not-knowing" (de Freitas) and abductive reasoning is also a crucially important source of scientific creativity which supplements combinatorial logic when dealing with the already known. Starting from studies by C. S. Peirce ...
Added: September 15, 2026
Gaete Sepulveda M. A., Dymarskaya O. Y., Sosa Gómez G., Mexico: Centros Culturales de México, 2026.
Universities are called to respond to social fragility, the environmental crisis, technological transformation, artificial
intelligence, and the loss of trust in institutions. This book argues that higher education cannot be limited to teaching,
research, or technology transfer. Its deepest purpose is to contribute to the holistic human development of individuals,
communities, and territories.
By articulating the third mission, service-learning, and the Fifth ...
Added: September 15, 2026
Gokhberg L., Abdrakhmanova G., Kutsenko E. et al., Вопросы статистики 2026 Т. 33 № 4 С. 5–20
This article examines the methodological and practical issues associated with the transition to the new edition of the All-Russian Classifier of Economic Activities (OKVED) – OKVED3. The relevance of the study stems from the need to reflect contemporary structural changes in the economy, related to the transformation of the existing economic activities and emergence of ...
Added: September 15, 2026
Makarov I. A., Россия в глобальной политике 2026 Т. 24 № 4 (140) С. 164–182
Три с половиной года остаётся до 2030-го – окончания срока реализации Целей устойчивого развития (ЦУР) – главной международной инициативы, устанавливающей долгосрочные ориентиры для будущего человечества. Уже очевидно, что она провалилась: преодоление бедности, решение экологических проблем и построение инклюзивного и справедливого общества остались красивой мечтой. Кто-то может воспринимать ЦУР как памятник человеческой наивности. Но надо понимать, что эта ...
Added: September 14, 2026
Chertenkov K., Вопросы статистики 2026 Т. 33 № 4 С. 80–89
В статье рассматривается дифференциация итоговой рождаемости в зависимости от уровня образования женщин. Используются данные Всероссийских переписей населения 2010 и 2020 гг., а также Всесоюзной переписи населения 1989 г. Применяются методы когортного анализа, включающие расчет среднего числа рожденных детей, доли бездетных и доли матерей, родивших трех и более детей, для реальных женских поколений 1930–1981 годов рождения. ...
Added: September 12, 2026
Glutsyuk A., / Series arXiv "math". 2026.
B.Josephson (Nobel Prize, 1973) predicted a tunnelling effect for a system of two superconductors separated by a narrow dielectric (such a system is called Josephson junction): existence of a supercurrent through it and equations governing it. The overdamped Josephson junction is modeled by the family of differential equations on the 2-torus, dθdτ=1ω(cosθ+B+Acosτ), which is known as ...
Added: September 8, 2026
Pochinka O., Shmukler V., / Series math.RT "arXiv:1808.06395 [math.RT]". 2026.
Anosov flows have a long and rich history, firstly motivated by the
study of geodesic flows in negative curvature surface by Anosov and Sinai.
Not every closed manifold admits an Anosov flow for well-known reasons:
the fundamental group of a 3-manifold M admitting an Anosov flow must
have exponential growth, and M must be universally covered by R3. Nevertheless,
there ...
Added: August 31, 2026
Loubenets E. R., / Series arxiv.org "quant-ph". 2026. No. 2607.18050.
In many quantum applications it is important to know whether or not a Bell nonlocal two-qudit state exhibits its nonlocality under correlation scenarios with some given numbers S1,S2≥1 of generalized quantum measurements at two sites. In the present article, we find analytically a new general locality condition sufficient for a nonseparable Werner state with a ...
Added: July 21, 2026
Bolbachan V., / Series math "arxiv.org". 2024.
Chow polylogarithms are some special functions arising in explicit description of the Beilinson regulator map. The most interesting functional equation for this function reflects its vanishing on the boundary in the Bloch's cycle complex. We show that this functional equation formally follows from more simple ones, namely skew-symmetry, functoriality and multiplicativity.
To prove this, we study ...
Added: July 16, 2026
Bolbachan V., / Series math "arxiv.org". 2024.
Let K be a field of characteristic zero. We prove that its motivic cohomology in degree m−1 and weight m is rationally isomorphic to the cohomology of the polylogarithmic complex. This gives a partial extension of A. Suslin theorem describing the indecomposable K3 of a field. ...
Added: July 16, 2026
Panov V., Ryabchenko A., / Series arXiv "stat.ME". 2026. No. 2607.05048.
This paper investigates the problem of statistical inference for a mixture distribution consisting of a discrete and a continuous component, with a particular focus on the class of rational-infinitely divisible distributions. We consider non-parametric estimation of both components of the mixture as well as the quasi-L{é}vy measure, assuming that the mixture belongs to the class ...
Added: July 9, 2026
Konakov V., Kucher D., Mammen E., / Series arXiv "math". 2026. No. 2606.11142v1.
In this paper, we construct strong approximations for discrete-time Markov chains weakly converging to continuous diffusion processes, as well as for their perturbed counterparts. Under the assumption of bounded coefficients, we construct closely coupled versions of these processes on a shared probability space. In particular, for both non-degenerate and degenerate cases, we maximize the probability ...
Added: June 11, 2026
Dorovskiy A., / Series arXiv "math". 2026.
In this paper the structural stability of generic families of vector fields of the PC-HC class on the two-dimensional sphere is proved. A classification of these families up to moderate equivalence in neighborhoods of their large bifurcation supports is presented, based on such invariants as the configuration and the characteristic set. The realization lemma is proved. ...
Added: May 14, 2026
Taletskii D., / Series arXiv "math". 2026.
A vertex subset of a graph is called a \textit{distance-$k$ independent set} if the distance between any two of its distinct vertices is at least $k + 1$. For all $n,k \geq 1$, we determine the minimum possible number of inclusion-wise maximal distance-$k$ independent sets among all $n$-vertex trees. It equals~$n$ if $n \leq k ...
Added: May 1, 2026
Ovcharenko M., / Series arXiv "math". 2026.
We introduce an explicit class of tempered Laurent polynomials in the sense of Villegas and Doran--Kerr in n⩽4 variables including all Landau--Ginzburg models for smooth Fano threefolds with very ample anticanonical class. We check that it contains Landau--Ginzburg models for various Fano fourfolds which are complete intersections in smooth toric varieties and Grassmannians of planes, ...
Added: April 30, 2026
Zlotnik Alexander, / Series arXiv "math". 2026. No. 2602.03481v1.
We deal with the global in time weak solutions to the 1D compressible Navier-Stokes system of equations for large discontinuous initial data and nonhomogeneous boundary conditions of three standard types. We prove the Lipschitz-type continuous dependence of the solution $(\eta,u,\theta)$, in a norm slightly stronger than $L^{2,\infty}(Q)\times L^2(Q)\times L^2(Q)$, on the initial data $(\eta^0,u^0,e^0)$ in a ...
Added: April 18, 2026
Medvedev V., / Series arXiv "math". 2026.
We investigate the interplay between the dimension of the space of static potentials and the geometric and topological structure of the underlying static three-manifold. A partial classification of boundaryless static manifolds is obtained in terms of this dimension. We also treat the case of static manifolds with boundary. In particular, we prove that if a ...
Added: April 3, 2026
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026