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On modality and complexity of affine embeddings
Sbornik Mathematics. 2001. Vol. 192. No. 8. P. 1133–1138.
Let G be a reductive algebraic group and let H be a reductive subgroup of G. The modality of a G-variety X is the largest number of the parameters in a continuous family of G-orbits in X. A precise formula for the maximum value of the modality over all affine embeddings of the homogeneous space G/H is obtained.
Pilé I., Shchur L., Deng Y., Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 Article 014101
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Swendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for models in different universality classes: Ising model, Potts model with three components, and four-state Potts model. The overlap of two ...
Added: July 6, 2026
Irkutsk: ISDCT SB RAS, 2026.
We study a model problem on the filtration of a conducting fluid through a
porous layer. A porous medium is presented as an assemblage of identical spherical
cells. Each cell consists of a porous core and liquid shell. We derive apriori estimates
for flow characteristics which show the specific behavior of the fluid. Our estimates
are validated numerically. ...
Added: July 5, 2026
М.: Наука и технологии, 2026.
«Телекоммуникации» ежемесячный рецензируемый производственный, информационно-аналитический и учебно-методический журнал выходит в свет с июля 2000 г.
Для руководителей и работников промышленности, научно-исследовательских и проектно-конструкторских институтов, высших учебных заведений, аспирантов и студентов, а также для специалистов, разрабатывающих, выпускающих и эксплуатирующих средства телекоммуникаций.
Новости разработок и производства, прогнозы развития, защита информации, Нормативные, справочные, аналитические и учебно-методические материалы.
Переход к глобальному информационному ...
Added: July 4, 2026
МФТИ, 2025.
абота редакции научного журнала «Труды Московского физико-технического института» (кратко «Труды МФТИ»), редакционной коллегии и редакционного совета осуществляется в соответствии с Положением, утвержденным ректором института. В состав редакционной коллегии входят руководители института, факультетов, институтских и факультетских кафедр. Главный редактор журнала —президент МФТИ, член-корр. РАН Кудрявцев Н.Н.
Журнал «Труды МФТИ» входит в базу данных РИНЦ (Российский Индекс Научного Цитирования) и доступен в электронной ...
Added: July 4, 2026
Springer, 2026.
This book presents established and new research on the close connections between graph games and systems of logic, particularly existing and newly designed modal logics. The volume utilizes two graph games – the sabotage game and the hide-and-seek game – to demonstrate the natural interplay between designing new graph games and exploring new kinds of ...
Added: June 30, 2026
Pochinka O., Barinova M., Journal of Geometry and Physics 2026 Vol. 228 P. 1–8
In the present paper we consider an Ω-stable 3-diffeomorphism with a solid or thickened surfaced non-trivial basic set. Such basic sets include, for instance, all one-dimensional expanding attractors and those two-dimensional basic sets that are not expanding. We prove that the chain recurrent set of every such a diffeomorphism necessarily contains at least two non-trivial ...
Added: June 30, 2026
German O., Illarionov A., Известия РАН. Серия математическая 2026 Т. 90 № 3 С. 3–18
Пусть симплекс с целочисленными вершинами - содержащий ровно одну целочисленную точку, отличную от своих вершин. В работе доказывается, что если точка находится во внутренности симплекса или в относительной внутренности некоторой гиперграни симплекса, то объем симплекса ограничен величиной, зависящей только от размерности, в противном случае объем симплекса может быть сколь угодно большим. Этот результат применяется для вывода асимптотической формулы для среднего числа вершин полиэдров ...
Added: June 29, 2026
Ivchenko A., Nigmatullin R. R., Dorokhin S. V., Mathematics 2021 Vol. 9 No. 4 Article 381
n this paper, we focus on the generalization of the Hurst empirical law and suggest a set of reduced parameters for quantitative description of long-time series. These series are usually considered as a specific response of a complex system (economic, geophysical, electromagnetic and other systems), where successive fixations of external factors become impossible. We consider ...
Added: June 27, 2026
Ivchenko A., Shestoperov A. I., Fomina E. V., Microgravity Science and Technology 2025 Vol. 37 No. 19 P. 1–19
The paper is dedicated to the analysis of medico-biological data obtained during locomotor testing of astronauts. Accurate data interpretation plays a crucial role in locomotion system monitoring, prophylaxis of long-duration spaceflight negative effects and thus in the development of an autonomous medical support system for deep space expeditions. During the locomotor testing the astronaut changes ...
Added: June 26, 2026
Gadzhimirzaev S., Хельвас А. В., 2023 3rd International Conference on Innovative Research in Applied Science, Engineering and Technology (IRASET) Mohammedia, Morocco 2023 P. 1–6
The article proposes the architecture for eventdriven Emergency Operation Center with Machine Vision Component. Sources of information are analyzed and approaches to machine vision events for tactical situations detection and estimation are discussed. Messages from Machine Vision Components are converted to Common Alerting Protocol and processed by Operation Center environment for tactical situations recognition. ...
Added: June 26, 2026
Prokofieva K., В кн.: Японский язык в вузе: актуальные проблемы преподавания. Сборник научных работ. Материалы Второго международного форума «Языки и культуры Восточной Азии в образовательном пространстве» (МГПУ, 23–26 апреля 2025). Выпуск 30Вып. 30: Сборник научных работ. Материалы Второго международного форума.: Языки народов мира, 2025. С. 325–333.
When teaching Japanese as a foreign language, it is customary to explain grammatical markers that convey the meanings of wish and invitation to joint action separately from each other. Meanwhile, comparing these markers for a more accurate understanding of the speaker's intentions, as well as the variability of the context of their use, can be ...
Added: April 26, 2026
Tiskin D., М.: Издательская группа URSS, 2026.
Предлагаемая книга представляет собой введение в формальную семантику — раздел языкознания, в котором посредством построения математически строгих моделей исследуется, как предложения приобретают значение и способность передавать информацию в зависимости от своей структуры и значений составляющих их слов. Классические теоретические идеи Г. Фреге, Д. Льюиса, Д. Каплана и др. излагаются современным языком, а при разработке нотации акцент сделан на том, ...
Added: March 17, 2026
Popov V., Успехи математических наук 2025 Т. 80 № 3(483) С. 189–190
It is proved that for any positive integers d and c, the set of isomorphism classes of all d-dimensional reductive algebraic groups with exactly c connected components is finite. As a corollary, the set of isomorphism classes of all d-dimensional compact real Lie groups with exactly c connected components is proved to be finite. To ...
Added: December 16, 2025
Letuchiy A., Russian Linguistics 2025 Т. 49 № 2 Статья 2
The article discusses types of interpretation that Russian complex sentences with factive,implicative and interpretation verbs get under negation and modal operators. By default,the external negative and modal context affects only the main situation. However, one findsexceptions of this rule. We call ‘transparent readings’ those readings in which the exter-nal context affects semantically both the matrix ...
Added: November 5, 2025
Prokofieva K., В кн.: Японский язык в вузе: актуальные проблемы преподавания. Сборник научных работ. Материалы Первого международного форума «Языки и культуры Восточной Азии в образовательном пространстве» (МГПУ, 13–16 марта 2024 г.). Выпуск 28Вып. 28: Сборник научных работ. Материалы Первого международного форума.: Языки народов мира, 2025. С. 291–300.
The category of modality in Japanese language is still widely discussed. What is the essence of modality for native Japanese speakers? How can it be expressed in a Japanese sentence? These two questions are among current ones till nowadays. Despite the extensive theoretical base and the existing traditional description of modality in Japanese linguistics, significant ...
Added: July 4, 2025
Arzhantsev I., Chuvashova O. V., Sbornik Mathematics 2004 Vol. 195 No. 6 P. 765–782
The complexity of an action of a reductive algebraic group G on an algebraic variety X is the codimension of a generic B-orbit in X, where B is a Borel subgroup of G. Affine homogeneous spaces G/H of complexity 1 are classified in this paper. These results are the natural continuation of the earlier classification ...
Added: June 13, 2025
Arzhantsev I., Sbornik Mathematics 1999 Vol. 190 No. 7 P. 937–954
The language of filtrations and contractions is used to describe the class of G-varieties obtained as the total spaces of the construction of contraction applied to affine spherical varieties, which is well-known in invariant theory.
These varieties are local models for arbitrary affine G-varieties of complexity 1 with a one-dimensional categorical quotient. As examples, reductive algebraic semigroups ...
Added: June 13, 2025
Arzhantsev I., Izvestiya. Mathematics 1997 Vol. 61 No. 4 P. 685–698
This paper is devoted to the actions of the group SL(2) with two-dimensional generic orbit on normal three-dimensional affine algebraic varieties. We obtain a complete classi cation of such actions whenever the stabilizer of general position
is the subgroup of monomial matrices. We also prove some results for arbitrary actions of complexity one of reductive groups. ...
Added: June 13, 2025
Arzhantsev I., Sbornik Mathematics 1997 Vol. 188 No. 5 P. 639–655
Actions of reductive groups on normal algebraic varieties with one-parameter families of spherical orbits of maximal dimension are studied under the assumption that the categorical quotient for the action is one-dimensional. As an application, the classification of the actions of the group SL(2) on three-dimensional normal affine varieties is completed. The ground field K is assumed to be algebraically closed and of characteristic zero. ...
Added: June 13, 2025
Arzhantsev I., Functional Analysis and Its Applications 1997 Vol. 31 No. 4 P. 278–280
Let a connected reductive group G act on a normal affine variety X with the generic stabilizer H, let the complexity of this action be one, and let the categorial quotient X//G be one-dimensional. Then the closure of any G-orbit in X is normal. ...
Added: June 13, 2025
Rudnev D., Borisova T. Y., Вестник Новосибирского государственного университета. Серия: История, филология 2022 Т. 22 № 2 С. 9 – 20
The aim of the article is to describe the system of means of expressing permission in the language of docu- ments of the 18th century. On the basis of linguistic material extracted from collections of published documents, pat- terns of expression of permission and their dynamics during the 18th century are revealed. In the time ...
Added: May 7, 2025
Сизикова Т. Э., Леонов С. В., Polikanova I., Сибирский психологический журнал 2025 № 95 С. 78–95
Addressing the psychophysiological correlates of reflection in the context of modern psychology based on the integrity paradigm is an urgent and promising area. We rely on the ideas of L.S. Vygotsky and the critical ontology of N. Hartmann, which allow us to analyze reflection using modal analysis and take into account the relationship between mental ...
Added: March 8, 2025
Gayfullin S., Chunaev D., Фундаментальная и прикладная математика 2023 Т. 24 № 4 С. 47–59
In this work we obtain sufficient conditions for a variety with a torus action of complexity one to have finite number of automorphism group orbits. ...
Added: December 2, 2023
van der Auwera J., Plungian V., Linguistic Typology 1998 Vol. 2 No. 1 P. 79–124
Added: November 12, 2023