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Comparison results of Talenti type for Elliptic Problems with Dirichlet boundary conditions have been widely investigated in the last decades. In this paper, we deal with Robin boundary conditions. Surprisingly, contrary to the Dirichlet…

Analysis of PDEs · Mathematics 2020-06-16 A. Alvino , C. Nitsch , C. Trombetti

In this article, we prove Talenti's comparison theorem for Poisson equation on complete noncompact Riemannian manifold with nonnegative Ricci curvature. Furthermore, we obtain the Faber-Krahn inequality for the first eigenvalue of Dirichlet…

Differential Geometry · Mathematics 2021-10-01 Daguang Chen , Haizhong Li

In this paper we consider PDE's problems involving the anisotropic Laplacian operator, with Robin boundary conditions. By means of Talenti techniques, widely used in the last decades, we prove a comparison result between the solutions of…

Analysis of PDEs · Mathematics 2021-03-05 Rossano Sannipoli

In the last decades comparison results of Talenti type for Elliptic Problems with Dirichlet boundary conditions have been widely investigated. In this paper, we generalize the results obtained in arXiv:1909.11950 to the case of p-Laplace…

Analysis of PDEs · Mathematics 2021-09-20 Vincenzo Amato , Andrea Gentile , Alba Lia Masiello

In this paper, we establish a comparison principle in terms of Lorentz norms and point-wise inequalities between a positive solution $u$ to the Poisson equation with non-homogeneous Neumann boundary conditions and a specific positive…

Analysis of PDEs · Mathematics 2024-10-10 Antonio Celentano , Carlo Nitsch , Cristina Trombetti

In the last years comparison results of Talenti type for Elliptic Problems have been widely investigated. In this paper we obtain a comparison result for the $p$-Laplace operator in multiply connected domains with Robin boundary condition…

Analysis of PDEs · Mathematics 2026-01-16 Luca Barbato , Francesco Salerno

In this article, we establish a $L^1$ estimate for solutions to Poisson equation with mixed boundary condition, on complete noncompact manifolds with nonnegative Ricci curvature and compact manifolds with positive Ricci curvature…

Differential Geometry · Mathematics 2022-11-11 Haiqing Cheng , Tengfei Ma , Kui Wang

In this paper we study the $p$-Poisson equation with Robin boundary conditions, where the Robin parameter is a function. By means of some weighted isoperimetric inequalities, we provide various sharp bounds for the solutions to the problems…

Analysis of PDEs · Mathematics 2022-11-22 Vincenzo Amato , Francesco Chiacchio , Andrea Gentile

Let $\Omega \subset \mathbb{R}^n$ be an open, bounded and Lipschitz set. We consider the Poisson problem for the $p-$Laplace operator associated to $\Omega$ with Robin boundary conditions. In this setting, we study the equality case in the…

Analysis of PDEs · Mathematics 2023-01-11 Alba Lia Masiello , Gloria Paoli

In this paper, by using Schwarz rearrangement and isoperimetric inequalities, we prove comparison results for the solutions of Poisson equations on complete Riemannian manifolds with $Ric\geq (n-1)\kappa$, $\, \kappa\geq 0$, which extends…

Differential Geometry · Mathematics 2021-10-13 Daguang Chen , Haizhong Li , Yilun Wei

In this paper, we obtain a quantitative version of the classical comparison result of Talenti for elliptic problems with Dirichlet boundary conditions. The key role is played by quantitative versions of the P\'olya-Szego inequality and of…

Analysis of PDEs · Mathematics 2024-01-29 Vincenzo Amato , Rosa Barbato , Alba Lia Masiello , Gloria Paoli

Inspired by recent work of Ferone and Volzone arXiv:2007.13195, we derive sufficient conditions for the validity and non-validity of a boundary version of Talenti's comparison principle in the context of Dirichlet-Poisson problems for the…

Analysis of PDEs · Mathematics 2025-09-04 Yassin El Karrouchi , Tobias Weth

We compare the solutions of two Poisson problems in a spherical shell with Robin boundary conditions, one with given data, and one where the data has been cap symmetrized. When the Robin parameters are nonnegative, we show that the solution…

Analysis of PDEs · Mathematics 2021-01-08 Jeffrey J. Langford

In this paper, we prove a Talenti-type comparison theorem for the $p$-Laplacian with Dirichlet boundary conditions on open subsets of a $\mathrm{RCD}(K,N)$ space with $K>0$ and $N\in (1,\infty)$. The obtained Talenti-type comparison theorem…

Differential Geometry · Mathematics 2024-01-23 Wenjing Wu

Let $\Omega \subset \mathbb{R}^2$ be an open, bounded and Lipschitz set. We consider the torsion problem for the Laplace operator associated to $\Omega$ with Robin boundary conditions. In this setting, we study the equality case in the…

Analysis of PDEs · Mathematics 2023-02-07 Alba Lia Masiello , Gloria Paoli

We prove a quantitative Faber-Krahn inequality for the first eigenvalue of the Laplace operator with Robin boundary conditions. The asymmetry term involves the square power of the Fraenkel asymmetry, multiplied by a constant depending on…

Analysis of PDEs · Mathematics 2016-11-22 D. Bucur , V. Ferone , C. Nitsch , C. Trombetti

In this paper, we generalize a classical comparison result for solutions to Hamilton-Jacobi equations with Dirichlet boundary conditions, to solutions to Hamilton-Jacobi equations with non-zero boundary trace. As a consequence, we prove the…

Analysis of PDEs · Mathematics 2023-05-18 Vincenzo Amato , Andrea Gentile

We consider the problem of simultaneously inferring the heterogeneous coefficient field for a Robin boundary condition on an inaccessible part of the boundary along with the shape of the boundary for the Poisson problem. Such a problem…

Optimization and Control · Mathematics 2022-01-05 Ruanui Nicholson , Matti Niskanen

In this paper we provide a comparison result between the solutions to the torsion problem for the Hermite operator with Robin boundary conditions and the one of a suitable symmetrized problem.

Analysis of PDEs · Mathematics 2021-10-22 Francesco Chiacchio , Nunzia Gavitone , Carlo Nitsch , Cristina Trombetti

In this paper, we establish a general weighted Hardy type inequality for the $% p-$Laplace operator with Robin boundary condition. We provide various concrete examples to illustrate our results for different weights. Furthermore, we present…

Analysis of PDEs · Mathematics 2022-08-11 Ismail Kombe , Abdullah Yener
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