?
The Sobolev space W_2^{1/2} : Simultaneous improvement of functions by a homeomorphism of the circle
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
Gadzhimirzaev S., Хельвас А. В., Лукьянченко П. П., Computer Research and Modeling 2023 Vol. 15 No. 1 P. 129–140
In this article we propose a new approach to the analysis of econometric industry parameters for the industry consolidation level. The research is based on the simple industry automatic control model. The state of the industry is measured by quarterly obtained econometric parameters from each industry’s company provided by the tax control regulator. An approach ...
Added: June 26, 2026
Gadzhimirzaev S., Хельвас А. В., International Frequency Sensor Association (IFSA) Publishing, 19-21 February 2025 Granada, Spain 2025 P. 172–176
The paper presents models for an innovative fully robotic warehouse for storing boxed goods. A discrete multiagent simulation of the movement of shuttles in a warehouse for a given sequence of pallet shipments has been implemented. Different strategies for placement of boxes in various areas of a warehouse are evaluated, as well as optimal routing ...
Added: June 26, 2026
Fedorov Timofey, Moscow Mathematical Journal 2026 Vol. 26 No. 1 P. 73–85
We obtain a complete list of smooth projective threefolds over C for which the dimension of the space of vanishing cycles (in H2(Y,Q) of the smooth hyperplane section Y) equals 2. We also obtain a complete list of rank 2 very ample vector bundles E on smooth projective surfaces with c2(E)=3. ...
Added: June 25, 2026
Воронеж: Издательский дом ВГУ, 2026.
В сборнике представлены материалы докладов и лекций, включенных в программу весенней математической школы. ...
Added: June 25, 2026
Lebedev V., Journal of Mathematical Analysis and Applications 2026 Vol. 563 No. 2 Article 130787
It is known that for every continuous real-valued
function $f$ on the circle $\mathbb T=\mathbb R/2\pi\mathbb Z$ there exists a
change of variable, i.e., a self-homeomorphism $h$ of $\mathbb T$, such that
the superposition $f\circ h$ is in the Sobolev space $W_2^{1/2}(\mathbb T)$.
We obtain new results on simultaneous improvement of functions by a single
change of variable in relation ...
Added: May 14, 2026
Карелина М. Г., Mkhitarian V., Финансы и бизнес 2025 Т. 21 № 4 С. 49–65
Дизельное топливо играет важную роль в российской экономике, его значимость обусловлена высокой эффективностью, экономичностью, надежностью и широким спектром применения. Россия один из крупнейших вмире экспортеров дизельного топлива, что обеспечивает значительные поступления в бюджет страны и является геополитическим инструментом в рамках глобальных трансформационных процессов. Статистическая оценка развития российского рынка дизельного топлива в представленной работе проводилась в ...
Added: February 20, 2026
Tyulenev A., Водопьянов С. К., Математический сборник 2020 Т. 211 № 6 С. 40–94
Пусть $S \subset \mathbb{R}^{n}$ -- замкнутое непустое множество такое, что для некоторых $d \in [0,n]$ и $\varepsilon > 0$ $d$-вместимость по Хаусдорфу $\mathcal{H}^{d}_{\infty}(S \cap Q(x,r)) \geq \varepsilon r^{d}$ для всех кубов $Q(x,r)$ с центрами в $x \in S$ и длинами ребер $2r \in (0,2]$. Для каждого $p>\max{1,n−d}$ мы даем внутреннюю характеризацию пространства следов $W_{p}^{1}(\mathbb{R}^{n})|_{S}$ на множестве ...
Added: December 25, 2025
Tyulenev A., Annales Academiae Scientiarum Fennicae Mathematica 2022 Vol. 47 No. 1 P. 507–531
Added: December 25, 2025
Tyulenev A., Математические заметки 2023 Т. 114 № 3 С. 404–434
Пусть $(X,d,\mu)$ – метрическое пространство с равномерно локально удваивающей мерой $\mu$. При $p \in (1,\infty)$ предположим, что $(X,d,\mu)$ допускает слабое локальное $(1,p)$-неравенство Пуанкаре.
Мы даем харакетризацию следов пространства Соболева первого порядка $W_{p}^{1}(X)$ на подмножествах $S$ пространства $X$, которые могут быть представлены как конечное объединение $\cup_{i=1}^{N}S_{i}$, $N \in \mathbb{N}$, регулярных по Альфорсу--Давиду множеств $S_{i} \subset X$, $i ...
Added: December 25, 2025
Tyulenev A., Математический сборник 2023 Т. 214 № 9 С. 58–143
При $p \in (1,\infty)$ пусть $(X,d,\mu)$ – метрическое пространство с равномерно локально удваивающей мерой μ, допускающее слабое локальное $(1,p)$-неравенство Пуанкаре. При каждом $\theta \in [0,p)$ мы характеризуем след пространства Соболева $W_{p}^{1}(X)$ на замкнутых множествах $S \subset X$, удовлетворяющих условию регулярности $\theta$-коразмерностного обхвата снизу. В частности, если пространство $(X,d,\mu)$ является $Q$-регулярным по Альфорсу при некоторых $Q ...
Added: December 25, 2025
Tyulenev A., Annali della Scuola Normale Superiore di Pisa, Classe di Scienze 2025 Vol. 26 No. 1 P. 397–467
Added: December 25, 2025
Campbell D., Hencl S., Menovshchikov A. et al., Calculus of Variations and Partial Differential Equations 2025 Vol. 64 No. 8 Article 256
We study injectivity for models of Nonlinear Elasticity that involve the second gradient. We assume that $\Omega \subset \mathbb{R}^n$ is a domain, $f \in W^{2,q}(\Omega, \mathbb{R}^n)$ satisfies $|J_f^{-a}| \in L^1$ and that $f$ equals a given homeomorphism on $\partial\Omega$. Under suitable conditions on $q$ and $a$ we show that $f$ must be a homeomorphism. As a main new tool we find an ...
Added: October 8, 2025
Menovshchikov A., Ukhlov A., Journal of Mathematical Analysis and Applications 2025 Vol. 551 No. 2 Article 129716
In this article, we study homeomorphisms $\varphi: \Omega \to \widetilde\Omega$ that generate embedding operators in Sobolev classes on metric measure spaces $X$ by the composition rule $\varphi^*(f)=f \circ \varphi$. In turn, this leads to Sobolev type embedding theorems for a wide class of domains $\widetilde\Omega \subset X$. ...
Added: October 8, 2025
Kosov E., Mathematical notes 2023 Vol. 114 No. 5 P. 862–874
The paper studies the regularity properties of images of Fomin differentiable measures under mappings in Sobolev classes. The obtained results generalize recently obtained bounds in Gaussian case to more abstract settings. ...
Added: February 7, 2025
Levin A., Olshanetsky M., Journal of Mathematical Physics 2024 Vol. 65 No. 5 Article 053503
We define two types of Witten’s zeta functions according to Cartan’s classification of compact symmetric spaces. The type II is the original Witten zeta function constructed by means of irreducible representations of the simple compact Lie group U. The type I Witten zeta functions, we introduce here, are related to the irreducible spherical representations of ...
Added: January 23, 2025
Menovshchikov A., Ukhlov A., Journal of Mathematical Sciences 2021 Vol. 258 No. 3 P. 313–325
In this paper, we consider composition operators on Hardy-Sobolev spaces in connections with BMO-quasiconformal mappings. Using the duality of Hardy spaces and BMO-spaces, we prove that BMO-quasiconformal mappings generate bounded composition operators from Hardy–Sobolev spaces to Sobolev spaces. ...
Added: November 20, 2024
Alexander Menovschikov, Ukhlov A., Computational Methods and Function Theory 2023 Vol. 24 No. 1 P. 149–162
In this paper, we give connections between mappings which generate bounded composition operators on Sobolev spaces and Q-mappings. Based on this, we obtain measure distortion properties of Q-homeomorphisms. ...
Added: November 20, 2024
Menovshchikov A., Ukhlov A., Journal of Mathematical Sciences 2023 Vol. 276 No. 1 P. 117–136
We study embedding operators on Orlicz–Sobolev spaces generated by the composition rule. Using the composition operators we consider embeddings of the Orlicz–Sobolev spaces into weighted Orlicz spaces. ...
Added: November 20, 2024