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In this note we present the Pohozaev identity for the fractional Laplacian. As a consequence of this identity, we prove the nonexistence of nontrivial bounded solutions to semilinear problems with supercritical nonlinearities in star-shaped…

Analysis of PDEs · Mathematics 2012-05-03 Xavier Ros-Oton , Joaquim Serra

In this paper we prove the Pohozaev identity for the semilinear Dirichlet problem $(-\Delta)^s u = f(u)$ in $\Omega$, $u \equiv 0$ in $\mathbb R^n\setminus\Omega$. Here, $s\in(0,1)$, $(-\Delta)^s$ is the fractional Laplacian in $\mathbb…

Analysis of PDEs · Mathematics 2015-09-01 Xavier Ros-Oton , Joaquim Serra

We prove nonlinear lower bounds and commutator estimates for the Dirichlet fractional Laplacian in bounded domains. The applications include bounds for linear drift-diffusion equations with nonlocal dissipation and global existence of weak…

Analysis of PDEs · Mathematics 2015-11-03 Peter Constantin , Mihaela Ignatova

In this paper, we prove a Pohozaev identity for the Spectral Fractional Laplacian (SFL). This identity allows us to establish non-existence results for the semilinear Dirichlet problem $(-\Delta|_{\Omega})^su = f(u)$ in star-shaped domains.…

Analysis of PDEs · Mathematics 2026-01-23 Itahisa Barrios-Cubas , Matteo Bonforte , María del Mar González , Clara Torres-Latorre

We establish a new integration by parts formula for the regional fractional laplacian $(-\Delta)^s_\Omega$ in bounded open sets of class $C^2$. As a direct application, we prove that weak solutions to the corresponding Dirichlet problem…

Analysis of PDEs · Mathematics 2025-08-13 Sidy M. Djitte

In this article we prove the Pohozaev identity for the semilinear Dirichlet problem of the form $-\Delta u + a(-\Delta)^s u = f(u)$ in $\Omega$, and $u=0$ in $\Omega^c$, where $a$ is a non-negative constant and $\Omega$ is a bounded $C^2$…

Analysis of PDEs · Mathematics 2026-01-14 Anup Biswas

In this note, we prove some non-existence results for Dirichlet problems of complex Hessian equations. The non-existence results are proved using the Pohozaev method. We also prove existence results for radially symmetric solutions. The…

Analysis of PDEs · Mathematics 2013-09-24 Chi Li

We establish pointwise formulas for the shape derivative of solutions to the Dirichlet problem associated with the fractional Laplacian. Specifically, we consider the equation $(-\Delta)^s u = h$ in $\Omega$ and $u=0$ in $\Omega^c$, where…

Analysis of PDEs · Mathematics 2026-02-10 Sidy M. Djitte , Franck Sueur

By virtue of a suitable approximation argument, we prove a Pohozaev identity for nonlinear nonlocal problems on $\mathbb{R}^N$ involving the fractional $p-$Laplacian operator. Furthermore we provide an application of the identity to show…

Analysis of PDEs · Mathematics 2017-01-31 Lorenzo Brasco , Sunra Mosconi , Marco Squassina

We analyze the shape of radial second Dirichlet eigenfunctions of fractional Schr\"odinger type operators of the form $(-\Delta)^s +V$ in the unit ball $B$ in $\mathbb{R}^N$ with a nondecreasing radial potential $V$. Specifically, we show…

Analysis of PDEs · Mathematics 2025-10-23 Mouhamed Moustapha Fall , Tobias Weth

In this paper, we are interested in studying the multiplicity, uniqueness, and nonexistence of solutions for a class of singular elliptic eigenvalue problem for the Dirichlet fractional $(p,q)$-Laplacian. The nonlinearity considered…

Analysis of PDEs · Mathematics 2023-06-26 A. L. A. de Araujo , Aldo H. S. Medeiros

Consider a classical elliptic pseudodifferential operator $P$ on ${\Bbb R}^n$ of order $2a$ ($0<a<1)$ with even symbol. For example, $P=A(x,D)^a$ where $A(x,D)$ is a second-order strongly elliptic differential operator; the fractional…

Analysis of PDEs · Mathematics 2016-04-25 Gerd Grubb

This paper deals with the local existence and uniqueness results for the solution of fractional differential equations with Hilfer-Hadamrd fractional derivative. Using Picard's approximations and generalizing the restrictive conditions…

Classical Analysis and ODEs · Mathematics 2017-06-02 D B Dhaigude , Sandeep P Bhairat

In this paper we study a class of fractional elliptic problems of the form $$ \Ds u= f(x,u) \quad \textrm{in} \O u=0\quad \textrm{in} \R^N \setminus \O,$$ where $s\in(0,1)$. We prove nonexistence of positive solutions when $\O$ is…

Analysis of PDEs · Mathematics 2012-09-12 Mouhamed Moustapha Fall , Tobias Weth

The thesis studies linear and semilinear Dirichlet problems driven by different fractional Laplacians. The boundary data can be smooth functions or also Radon measures. The goal is to classify the solutions which have a singularity on the…

Analysis of PDEs · Mathematics 2015-11-03 Nicola Abatangelo

In this paper we show several connections between special functions arising from generalized COM-Poisson-type statistical distributions and integro-differential equations with varying coefficients involving Hadamard-type operators. New…

Probability · Mathematics 2021-01-12 Roberto Garra , Enzo Orsingher , Federico Polito

We consider a fractional elliptic equation in an unbounded set with both Dirichlet and fractional normal derivative datum prescribed. We prove that the domain and the solution are necessarily radially symmetric. The extension of the result…

Analysis of PDEs · Mathematics 2017-11-10 Nicola Soave , Enrico Valdinoci

We study the dependence of the first eigenvalue of the Finsler $p$-Laplacian and the corresponding eigenfunctions upon perturbation of the domain and we generalize a few results known for the standard $p$-Laplacian. In particular, we prove…

Analysis of PDEs · Mathematics 2020-05-08 Giuseppina di Blasio , Pier Domenico Lamberti

The paper presents a new formula for the fractional integration, which generalizes the Riemann-Liouville and Hadamard fractional integrals into a single form, which when a parameter fixed at different values, produces the above integrals as…

Classical Analysis and ODEs · Mathematics 2014-10-23 Udita N. Katugampola

The analysis of nonlocal discrete equations driven by fractional powers of the discrete Laplacian on a mesh of size $h>0$ \[ (-\Delta_h)^su=f, \] for $u,f:\mathbb{Z}_h\to\mathbb{R}$, $0<s<1$, is performed. The pointwise nonlocal formula for…

Analysis of PDEs · Mathematics 2025-01-03 Ó. Ciaurri , L. Roncal , P. R. Stinga , J. L. Torrea , J. L. Varona
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