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Соболевская регулярность для бесконечномерного уравнения Монжа-Ампера
Доклады Академии наук. 2012. Т. 44. № 2. С. 131–136.
Kolesnikov A., Богачев В. И.
Menovshchikov A., Journal of Mathematical Sciences 2026 Vol. 298 P. 608–618
We study the set of (p, q)-eigenvalues of the p-Laplace operator with no-flux boundary conditions. We show that this set is closed and that its smallest positive element (the first nontrivial eigenvalue) admits a variational characterization. Moreover, we establish lower bounds for this eigenvalue in cuspidal domains. ...
Added: July 27, 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
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
The Sobolev space W_2^{1/2} : Simultaneous improvement of functions by a homeomorphism of the circle
Vladimir Lebedev, / Series arXiv "math". 2025. No. arXiv:2511.07840v3.
Added: December 2, 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
Kolesnikov A., Colesanti A., Livshyts G. et al., / Series arXiv "math". 2024.
In this paper, we study new extensions of the functional Blaschke-Santalo inequalities, and explore applications of such new inequalities beyond the classical setting of the standard Gaussian measure. ...
Added: December 20, 2024
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
Menovshchikov A., Ukhlov A., Journal of Mathematical Analysis and Applications 2024 Vol. 531 No. 1 Article 127826
In this paper we give characterizations of mappings generate embeddings of Sobolev spaces in the terms of ring capacity inequalities. In addition we prove that such mappings are Lipschitz mappings in the sub-hyperbolic type capacitory metrics. ...
Added: November 20, 2024
Alexander Menovschikov, Journal of Mathematical Sciences 2024 Vol. 281 No. 5 P. 782–804
We provide estimates for the constant in the weighted Sobolev–Poincaré inequality for a special class of planar domains and weights. We obtain lower bounds for the first nonzero eigenvalue $\mu_\rho$ of the Neumann Laplacian with density $\rho$. These estimates depend on the density function and geometry of the domain. We show that $\mu_\rho$ can be ...
Added: November 20, 2024
Caglar U., Kolesnikov A., Werner E., Indiana University Mathematics Journal 2022 Vol. 71 No. 6 P. 2309–2333
In this paper we further develop the theory of f-divergences for log-concave functions and their related inequalities. We establish Pinsker inequalities and new affine invariant entropy inequalities. We obtain new inequalities on functional affine surface area and lower and upper bounds for the Kullback-Leibler divergence in terms of functional affine surface area. The functional inequalities ...
Added: June 23, 2023