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September 17, 2026
'I Wish That People Would Place Greater Trust in Science'
When Tatiana Eremicheva chose Fundamental and Computational Linguistics as her field of study, she thought it would be about learning languages. Instead, she discovered it was about helping people. In this interview for the HSE Young Scientists project, she discusses science as a way of understanding the world, billiards as a team-building activity, and why learning to read is not always as easy as it seems.
September 15, 2026
Immunity to Chaos: How Personal Resources Help Us Cope with the Challenges of a Turbulent World
International conflicts, crises and digital overload—the modern world puts our minds to the test every day. Traditional psychology often focuses on the consequences: anxiety, depression, and psychosomatic disorders. But what if we looked at the problem differently—through the lens of the resources that prevent us from breaking down? Psychological immunity is precisely this set of resources. Alena Zolotareva and her group, Psychological Immunity as a Resource for Positive Functioning, are developing an integrative model of this phenomenon, adapting diagnostic tools and preparing for large-scale empirical research. Why do psychologists need to collaborate with medical professionals, and how could their research transform preventive care in clinics and corporations?
September 11, 2026
How to Assess Students Knowledge in the Age of AI
A researcher at HSE University has proposed a flowchart to help lecturers decide how to assess students who use artificial intelligence. It shows where the use of AI should be restricted and where it can be incorporated into the learning process. The article has been published in IT Professional.

 

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Следы пространств Соболева на кусочно регулярных по Альфорсу–Давиду множествах

Математические заметки. 2023. Т. 114. № 3. С. 404–434.
Tyulenev A.
Language: Russian
Keywords: пространства Соболева
Similar publications
The Sobolev space W_2^{1/2}: Simultaneous improvement of functions by a homeomorphism of the circle
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
Пространства Соболева $W_{p}^{1}(\mathbb{R}^{n})$ на $d$-толстых замкнутых подмножествах $\mathbb{R}^{n}$
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
Следы пространств Соболева на нерегулярных подмножествах метрических пространств с мерой
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
The Sobolev space W_2^{1/2} : Simultaneous improvement of functions by a homeomorphism of the circle
Vladimir Lebedev, / Series math "arxiv.org". 2025. No. arXiv:2511.07840v3.
Added: December 2, 2025
The Bohr--Pal Theorem and the Sobolev Space W_2^{1/2}
Vladimir Lebedev, Studia Mathematica 2015 Vol. 231 No. 1 P. 73–81
The well-known Bohr--Pal theorem asserts that for every continuous real-valued function f on the circle T there exists a change of variable, i.e., a homeomorphism h of T onto itself, such that the Fourier series of the superposition foh converges uniformly. Subsequent improvements of this result imply that actually there exists a homeomorphism that brings f into the Sobolev space W_2^{1/2}(T). This ...
Added: February 16, 2016
The Bohr--Pal Theorem and the Sobolev Space W_2^{1/2}
Vladimir Lebedev, / Series math "arxiv.org". 2015. No. 1508.07167.
The well-known Bohr--Pal theorem asserts that for every continuous real-valued function f on the circle T there exists a change of variable, i.e., a homeomorphism h of T onto itself, such that the Fourier series of the superposition f o h converges uniformly. Subsequent improvements of this result imply that actually there exists a homeomorphism ...
Added: September 3, 2015
Соболевские пространства, их обобщения и эллиптические задачи в областях с гладкой и липшицевой границей
Agranovich M. S., М.: МЦНМО, 2013.
Эта книга адресуется математикам, которые занимаются уравнениями в частных производных и функциональным анализом. Первые две главы содержат вводные курсы. В главе I это теория пространств H s бесселевых потенциалов (s ∈ ; при s 0 это пространства W2  С. Л. Соболева––Л. Н. Слободецкого). В главе II –– теория общих эллиптических уравнений и задач в этих пространствах ...
Added: December 18, 2013
Hessian metrics, CD(K,N)-spaces, and optimal transportation of log-concave measures
Kolesnikov A., Discrete and Continuous Dynamical Systems 2014 Vol. 34 No. 4 P. 1511–1532
We study the optimal transportation mapping VΦ: ℝd → ℝd pushing forward a probability measure μ = e -V dx onto another probability measure ν = e-W dx. Following a classical approach of E. Calabi we introduce the Riemannian metric g = D2 Φ on ℝd and study spectral properties of the metric-measure space M ...
Added: November 12, 2013
Соболевская регулярность для бесконечномерного уравнения Монжа-Ампера
Kolesnikov A., Богачев В. И., Доклады Академии наук 2012 Т. 44 № 2 С. 131–136
Работа связана с изучением соболевской регулярности отображений оптимальной транспортировки в бесконечномерных пространствах, наделенных гауссовской мерой. Найдены условия принадлежности соболевскому  классу для таких отображений. Доказана формула замены переменных. ...
Added: February 19, 2013
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