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We prove stability results in hypercontractivity estimates for the Hopf--Lax semigroup in $\mathbb R^n$ and apply them to deduce stability results for the Euclidean $L^p$-logarithmic Sobolev inequality for any $p>1$. As a main tool, we use…

偏微分方程分析 · 数学 2025-09-01 Zoltán M. Balogh , Alexandru Kristály

We prove a sharp quantitative version of the $p$-Sobolev inequality for any $1<p<n$, with a control on the strongest possible distance from the class of optimal functions. Surprisingly, the sharp exponent is constant for $p<2$, while it…

泛函分析 · 数学 2020-03-10 Alessio Figalli , Yi Ru-Ya Zhang

In this paper, we obtain sharp remainder terms for the Hardy-Poincar\'e inequalities with general non-radial weights in the setting of Baouendi-Grushin vector fields (see Theorem 2.5). It is worth emphasizing that all of our results are new…

偏微分方程分析 · 数学 2026-01-29 Yerkin Shaimerdenov , Nurgissa Yessirkegenov , Amir Zhangirbayev

We investigate the sharp constant for weighted fractional Hardy inequalities with the singularity on a flat submanifold of codimension $k$, where $1\leq k<d$. We also prove a weighted fractional Hardy inequality with a remainder. Using this…

偏微分方程分析 · 数学 2026-01-05 Michał Kijaczko , Vivek Sahu

In this article, we derive the existence of positive solutions of a semi-linear, non-local elliptic PDE, involving a singular perturbation of the fractional laplacian, coming from the fractional Hardy-Sobolev-Maz'ya inequality, derived in…

偏微分方程分析 · 数学 2018-04-11 Arka Mallick

We investigate the weighted fractional order Hardy inequality $$ \int_{\Omega}\int_{\Omega}\frac{|f(x)-f(y)|^{p}}{|x-y|^{d+sp}}\text{dist}(x,\partial\Omega)^{-\alpha}\text{dist}(y,\partial\Omega)^{-\beta}\,dy\,dx\geq…

偏微分方程分析 · 数学 2026-01-05 Bartłomiej Dyda , Michał Kijaczko

Recent work introduced a robust computational framework combining embedded mathematical structures, advanced optimization, and neural network architecture, leading to the discovery of multiple unstable self-similar solutions for key fluid…

偏微分方程分析 · 数学 2025-12-01 Yongji Wang , Tristan Léger , Ching-Yao Lai , Tristan Buckmaster

In this article, we establish the existence of an extremal function for the k-th order critical Hardy-Sobolev-Maz'ya (HSM) inequalities on the upper half space $\mathbb{R}^{n+1}_{+}$ when $k\ge 2$ and $n\geq 2k+2$:…

偏微分方程分析 · 数学 2026-02-06 Guozhen Lu , Chunxia Tao

In this paper, we establish several improved Caffarelli-Kohn-Nirenberg and Hardy-type inequalities. Our main results are divided into two parts. In the first part, we consider the following Caffarelli-Kohn-Nirenberg inequality:…

偏微分方程分析 · 数学 2026-01-23 Yuxuan Zhou , Wenming Zou

In this paper, we study the stability of fractional Sobolev trace inequality within both the functional and critical point settings. In the functional setting, we establish the following sharp estimate:…

偏微分方程分析 · 数学 2026-01-23 Yingfang Zhang , Yuxuan Zhou , Wenming Zou

In this paper, we obtain the reversed Hardy-Littlewood-Sobolev inequality with vertical weights on the upper half space and discuss the extremal functions. We show that the sharp constants in this inequality are attained by introducing a…

偏微分方程分析 · 数学 2023-11-08 Jingbo Dou , Yunyun Hu , Jingjing Ma

We establish sharp stability results for of non--selfadjoint the ascent and descent spectra under strong resolvent convergence (SRS), a natural framework for finite element approximations of non-selfadjoint and singularly perturbed…

数值分析 · 数学 2025-11-27 Marwa Ennaceur

In this note, we obtain the rigidity of the sharp Cheng-Yau gradient estimate for positive harmonic functions on surfaces with nonegative Gaussian curvature, the rigidity of the sharp Li-Yau gradient estimate for positive solutions to heat…

微分几何 · 数学 2024-11-05 Qixuan Hu , Guoyi Xu , Chengjie Yu

We prove a sharp quantitative version for the stability of the Sobolev inequality with explicit constants. Moreover, the constants have the correct behavior in the limit of large dimensions, which allows us to deduce an optimal quantitative…

偏微分方程分析 · 数学 2025-04-02 Jean Dolbeault , Maria J. Esteban , Alessio Figalli , Rupert L. Frank , Michael Loss

In this paper, we prove a sharp quantitative stability result for the affine fractional \(L^2\)-Sobolev inequality in \(\dot H^s(\mathbb R^n)\), \(0<s<1\), introduced by Haddad--Ludwig (\emph{Math. Ann.} \textbf{388} (2024), 1091--1115). In…

偏微分方程分析 · 数学 2026-05-06 Song Fan , Gui-Dong Li , Jianjun Zhang

In this paper, we establish the stability for the Hardy-Littlewood-Sobolev (HLS) inequalities with explicit lower bounds. By establishing the relation between the stability of HLS inequalities and the stability of fractional Sobolev…

偏微分方程分析 · 数学 2024-01-01 Lu Chen , Guozhen Lu , Hanli Tang

In this paper, we study the existence of extremal functions of the discrete Sobolev inequality and Hardy-Littlewood-Sobolev inequality on lattice graphs. We introduce the discrete Concentration-Compactness principle, and prove the existence…

偏微分方程分析 · 数学 2021-07-01 Bobo Hua , Ruowei Li

In this paper, we study the quantitative stability of the nonlocal Soblev inequality \begin{equation*} S_{HL}\left(\int_{\mathbb{R}^N}\big(|x|^{-\mu} \ast |u|^{2_{\mu}^{\ast}}\big)|u|^{2_{\mu}^{\ast}}…

偏微分方程分析 · 数学 2023-06-30 Paolo Piccione , Minbo Yang , Shuneng Zhao

In this paper, we provide a sharp remainder term for the general weighted discrete $p$-Hardy inequality. By simply choosing weights and specifying $1<p<\infty$, we are able to recover the identity by Krej{\v{c}}i{\v{r}}{\'\i}k-\v{S}tampach…

泛函分析 · 数学 2026-04-03 Nurgissa Yessirkegenov , Amir Zhangirbayev

In this paper, we investigate the continuous time partial primal-dual gradient dynamics (P-PDGD) for solving convex optimization problems with the form $ \min\limits_{x\in X,y\in\Omega}\ f({x})+h(y),\ \textit{s.t.}\ A{x}+By=C $, where $…

最优化与控制 · 数学 2020-03-18 Zhaojian Wang , Wei Wei , Changhong Zhao , Zetian Zheng , Yunfan Zhang , Feng Liu
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