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К 90-летию со дня рождения Б.С. Гельруда
Математика в школе. 2020. № 7. С. 69–80.
Peresetsky A., Брайнин В. Б., Волков С. Е., Каленков С. Г., Левит В. И., Медведева Н. Н., Сагарадзе В. В., Файншмидт Е. М., Шейдвассер (Таран) В. М.
Priority areas:
mathematics
Language:
Russian
Avdoshin S.M., Patrushev K. A., Proceedings of the Institute for System Programming of the RAS 2026 No. 4 часть 2 P. 245–256
The cardinality-constrained Markowitz problem is NP-hard and traditionally solved with commercial MIQP solvers. Following the 2022 export restrictions that rendered both commercial MIQP software and cloud quantum platforms (IBM Quantum, D-Wave Leap) inaccessible from the Russian Federation, practitioners require open-source alternatives. This paper systematically compares three solver families for the discrete mean-variance problem: two open-source ...
Added: August 27, 2026
Zaikin A., Vlasenko D., Zakharov D. et al., Diagnostics 2026 Vol. 16 No. 17 P. 1–15
Background/Objectives: Synolitic graphs (SGs) were developed for task-based fMRI, where
edge weights encode the discriminative power of pairwise regional features; whether similar
information can be recovered from resting-state data was untested. We benchmarked
SGs for autism spectrum disorder (ASD) classification using the multisite ABIDE-I dataset
(871 subjects: 403 subjects with ASD, 468 typical controls; 17 sites; CC200 atlas). Methods:
Using ...
Added: August 27, 2026
Melnikov I., Pelinovsky E., Nonlinear Dynamics 2026 No. 114 Article 934
Pyramidal solitons (solitons with more than two inflection points) of the generalized Korteweg–de Vries (KdV) equation are investigated. Necessary and sufficient conditions for the existence of such structures are presented. Within the framework of the generalized Gardner equation — the simplest model that admits pyramidal solitons as solutions — it is shown that these solutions ...
Added: August 27, 2026
Тула: Тульский государственный педагогический университет им. Л.Н. Толстого, 2025.
Сборник содержит материалы, представленные на XXIV Международной конференции «Алгебра, теория чисел, дискретная геометрия и многомасштабное моделирование: современные проблемы, приложения и проблемы истории», посвящённой 110-летию со дня рождения академика Юрия Владимировича Линника и 110-летию со дня рождения профессора Андрея Борисовича Шидловского и 80-летию со дня рождения профессора Геннадия Ивановича Архипова. Материалы конференции будут полезны научным работникам, ...
Added: August 27, 2026
Panova A., Ostrovnaya M., Demokratizatsiya: The Journal of Post-Soviet Democratization 2026 Vol. 34 No. 2 P. 199–226
Local authorities can crucially affect the economic performance of public organizations. Using data on the Moscow region, we analyze the unique case of a huge, socio-economically homogeneous region with differing political environments. We examine how the political characteristics of local authorities influence state schools’ decisions on whether to outsource non-core activities, in this case food ...
Added: August 27, 2026
Nesterenko A., Чирский В. Г., Матвеев В. Ю., Чебышевский сборник 2026 Т. 27 № 2 С. 118–127
The article presents the results of a practical study of the statistical properties of some sequences that are values of functions of a special type. ...
Added: August 26, 2026
Medushevsky A. N., Liberal.ru 2026
The Liberal Mission Foundation continues to introduce readers to new concepts of democracy and relevant publications. This discussion focuses on the challenges facing democracy in the era of globalization, as addressed in two recent books: *The Backsliders: Why Leaders Undermine Their Own Democracies* by S.C. Stokes (2025) and *Critical Theories and the Postsocialist Challenge: Race, ...
Added: August 26, 2026
Medushevsky A. N., Liberal.ru 2026
Today, more than ever before, the contribution of new technologies shapes the conditions of humanity's existence as a biological species, prompting a debate about its prospects for survival. This process of transformation—which spans every sphere of social and moral regulation, from family relations and child-rearing to the very meaning of life—is dividing public opinion between ...
Added: August 26, 2026
Medushevsky A. N., Вопросы теоретической экономики 2026 № 2 С. 146–164
It is generally accepted that the basis of social and legal stability in any society is a consensus on vir tue — the fundamental values of proper behavior, ways of maintaining and reproducing them. And, conversely, the destruction of this consensus is a sign of the loss of stability and divergence of positions of social ...
Added: August 26, 2026
Eduard Sopin, Nazarin A., Begishev V. et al., IEEE Transactions on Vehicular Technology 2026 Vol. 75 No. 6 P. 10995–11007
Aimed at rate-greedy applications having extreme requirements for the data rate at the air interface, 5G New Radio (NR) systems may experience problems when the number of user equipment (UE) in the coverage of the cell increases due to limited capacity of the physical downlink control channel (PDCCH).The aim of this study is to explore ...
Added: August 26, 2026
Medushevsky A. N., Сравнительное конституционное обозрение 2025 Т. 34 № 4 С. 135–166
The communist morality created in the USSR to form a “new man” was based on a code of moral values that replaced traditional religious ideas with the ideological postulates of a one-party dictator ship. The crisis and collapse of this ideology in post-Soviet Russia led to the emergence of an “ethi cal vacuum” — moral ...
Added: August 26, 2026
Блудов М. В., Journal of Fixed Point Theory and Applications 2026 No. 28 Article 73
In this paper, we study a construction of homotopy invariants of open or closed covers, where the homotopy class is defined relative to a pair (V, r), with V a finite set of points in and r a point in the interior of their convex hull. We show that the simplicial complex of non-balanced subsets associated with (V, r) has the homotopy ...
Added: August 25, 2026
L.I. Kuzmina, Osipov , Y. V., Kolokoltseva, T. N., Advances in Water Resources 2026 Vol. 213 Article 105335
We study 1D transport of mobilized particles, detached from the solid matrix, in porous media (so-called fines migration). Three types of colloidal-suspension flow models are considered: (i) averaged model for multicomponent colloids with distributed properties; (ii) flow of binary colloids with interacting particles; (iii) discrete system for multicomponent low-concentration colloid. These models account for distributed ...
Added: August 25, 2026
Liudmila I. Kuzmina, Osipov, Y. V., International Journal for Computational Civil and Structural Engineering 2026 Vol. 22 No. 2 P. 138–148
Modeling the transport and sedimentation of small particles of suspensions and colloids in porous rocks is an important problem in subsurface hydromechanics. Particles entrained in fluid are transported and retained in the rock pores. The filtration process is determined by the number and size of pores and is characterized by porosity—the ratio of the void ...
Added: August 25, 2026
L.I.Kuzmina, Osipov Y. V., Mathematical notes, ISSN 0001-4346 2025 Vol. 116 No. 6 P. 1251–1261
We consider the displacement of oil by water with active chemical reagents in porous media. A one-dimensional model of reagent transport and deposition is defined by a hyperbolic system of first-order equations. The purpose of the article is to find the conditions for the existence of a continuous solution with discontinuous boundary and initial conditions. ...
Added: August 25, 2026
Voronina Y., Kuryan M., Педагогика и психология образования 2026 № 2 С. 84–98
Teaching argumentation in foreign language classes is a promising approach, as it enhances students' critical thinking and improves the quality of their academic work. Despite the rather widespread use of explicit methods for developing argumentation skills, the implicit approach remains underexplored. This paper proposes a system for organizing implicit argumentation instruction in English based on ...
Added: August 24, 2026
Stognieva O., Злобина В. А., М.: Юрайт, 2026.
Учебный курс предназначен для студентов направлений журналистики и медиакоммуникаций, владеющих английским языком на уровне B2–C1. Курс отражает ключевые вызовы современной цифровой медиасреды: использование искусственного интеллекта, борьбу с дезинформацией, развитие медиаграмотности, влияние социальных сетей, мобильную журналистику, цифровую идентичность и перспективы развития медиа. Обучение построено на аутентичных материалах и практико-ориентированных заданиях, моделирующих реальные профессиональные ситуации. Выполнение интерактивных ...
Added: August 22, 2026
Долгополова Ю. Н., Kotov A. A., Юсупова М. А. et al., М.: НИУ ВШЭ, Институт образования, 2026.
More than half of Russian adolescents use generative neural networks daily, and this figure continues to grow. Under these conditions, AI is becoming not just a tool but a cognitive partner for students, which requires a rethinking of existing educational practices. This systematic review synthesizes empirical data from studies conducted between 2014 and 2026 on ...
Added: August 21, 2026
Лукьяненко Д. В., Ragimova A., Мухорина А. et al., European Physical Journal: Special Topics 2026 P. 1–24
Electronic health records (EHRs) contain vast volumes of clinical information that encode complex relationships between diseases. Traditional approaches to the analysis of interrelated or co-occurring diseases have focused on pairwise associations between diagnoses, missing the higher-order structures that characterise multimorbid patients. The present paper offers a narrative review of existing statistical, machine-learning, and artificial intelligence ...
Added: August 20, 2026
Chernov A., European Journal of Mathematics 2026 Vol. 12 Article 48
An induced additive action on a projective variety is a regular action of the group G_a^n on X in P^n with an open orbit that can be extended to a regular action on P^n. Such actions are known to correspond to pairs (A, U), where A is a local algebra and U is a generating subspace lying in the maximal ideal. This paper ...
Added: August 19, 2026
Веракса А. Н., Зинченко Ю. П., Калимуллин А. М. et al., Вестник Московского университета. Серия 20: Педагогическое образование 2024 Т. 22 № 1 С. 26–53
Развитие психологической науки в контексте образовательной практики стимулирует исследователей к поиску научного объяснения явлений, которые часто используются без должного обоснования. Статья посвящена анализу «математической тревожности» в междисциплинарном контексте. В 2000 году в г. Дубне состоялась Всероссийская конференция «Математика и общество. Математическое образование на рубеже веков», организованная по инициативе академиков В.И. Арнольда и В.А. Садовничего, где ...
Added: August 19, 2026
IEEE, 2025.
Dynamics of Systems, Mechanisms and Machines (Dynamics) ...
Added: August 19, 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
Курылев К. П., Degterev D. A., Грачиков Е. Н. et al., Постсоветские исследования 2022 Т. 5 № 7 С. 754–763
This article is based on the understanding of the results of a one-name methodological
seminar organized and conducted by the Department of Theory and History of International Relations
of the Russian Academy of Sciences on September 8, 2022, in which the issues of the nature and
features of the USSR foreign policy for the period from 1971 to ...
Added: July 18, 2026