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The main scope of this article is to define the concept of principal eigenvalue for fully non linear second order operators in bounded domains that are elliptic and homogenous. In particular we prove maximum and comparison principle, Holder…

Analysis of PDEs · Mathematics 2007-05-23 I. Birindelli , F. Demengel

We study the validity of the comparison and maximum principles, and their relation with principal eigenvalues, for a class of degenerate nonlinear operators that are extremal among operators with one dimensional fractional diffusion.

Analysis of PDEs · Mathematics 2021-07-16 Isabeau Birindelli , Giulio Galise , Delia Schiera

In this paper we study the maximum principle, the existence of eigenvalue and the existence of solution for the Dirichlet problem for operators which are fully-nonlinear, elliptic but presenting some singularity or degeneracy which are…

Analysis of PDEs · Mathematics 2008-03-27 I. Birindelli , F. Demengel

We characterize the validity of the Maximum Principle in bounded domains for fully nonlinear degenerate elliptic operators in terms of the sign of a suitably defined generalized principal eigenvalue. Here, maximum principle refers to the…

Analysis of PDEs · Mathematics 2013-10-14 Henri Berestycki , Italo Capuzzo Dolcetta , Alessio Porretta , Luca Rossi

We consider the Neumann problem in $C^2$ bounded domains for fully nonlinear second order operators which are elliptic, homogenous with lower order terms. Inspired by \cite{bnv}, we define the concept of principal eigenvalue and we…

Analysis of PDEs · Mathematics 2007-12-06 Stefania Patrizi

In this paper, we study the first eigenvalue of a nonlinear elliptic system involving $p$-Laplacian as the differential operator. The principal eigenvalue of the system and the corresponding eigenfunction are investigated both analytically…

Numerical Analysis · Mathematics 2019-05-30 Farid Bozorgnia , Seyyed Abbas Mohammadi , Tomas Vejchodsky

Abstract approaches to maximum and anti-maximum principles for differential operators typically rely on the condition that all vectors in the domain of the operator are dominated by the leading eigenfunction of the operator. We study the…

Analysis of PDEs · Mathematics 2024-04-12 Sahiba Arora , Jochen Glück

This paper investigates the link between the Maximum Principle and the sign of the (generalized) principal eigenvalue for elliptic operators in unbounded domains. Our approach covers the cases of Dirichlet, Neumann, and (indefinite) Robin…

Analysis of PDEs · Mathematics 2021-02-16 Samuel Nordmann

In this paper we analyze an eigenvalue problem related to the nonlocal $p-$laplace operator plus a potential. After reviewing some elementary properties of the first eigenvalue of these operators (existence, positivity of associated…

Analysis of PDEs · Mathematics 2017-03-31 L. Del Pezzo , J. Fernandez Bonder , L. Lopez-Rios

Using three different notions of generalized principal eigenvalue of linear second order elliptic operators in unbounded domains, we derive necessary and sufficient conditions for the validity of the maximum principle, as well as for the…

Analysis of PDEs · Mathematics 2013-10-04 Henri Berestycki , Luca Rossi

We present a finite difference method to compute the principal eigenvalue and the corresponding eigenfunction for a large class of second order elliptic operators including notably linear operators in nondivergence form and fully nonlinear…

Numerical Analysis · Mathematics 2016-02-18 Isabeau Birindelli , Fabio Camilli , Italo Capuzzo Dolcetta

We consider a class of nonlinear integro-differential operators and prove existence of two principal (half) eigenvalues in bounded smooth domains with exterior Dirichlet condition. We then establish simplicity of the principal…

Analysis of PDEs · Mathematics 2018-03-20 Anup Biswas

We investigate strong maximum (and minimum) principles for fully nonlinear second order equations on Riemannian manifolds that are non-totally degenerate and satisfy appropriate scaling conditions. Our results apply to a large class of…

Analysis of PDEs · Mathematics 2020-07-31 Alessandro Goffi , Francesco Pediconi

This paper classifies the set of supersolutions of a general class of periodic-parabolic problems in the presence of a positive supersolution. From this result we characterize the positivity of the underlying resolvent operator through the…

Analysis of PDEs · Mathematics 2018-03-20 I Anton , J Lopez-Gomez

We consider a class of fully nonlinear nonlocal degenerate elliptic operators which are modeled on the fractional Laplacian and converge to the truncated Laplacians. We investigate the validity of (strong) maximum and minimum principles,…

Analysis of PDEs · Mathematics 2023-01-25 Delia Schiera

We establish an explicit maximum principle for the Dirichlet problem associated with the $p$-Laplacian ($p>1$), where the constant depends on both $p$ and the geometry of the domain. From this result we derive two main applications. First,…

Analysis of PDEs · Mathematics 2026-05-19 Kevin Carrillo-Reina , Jean C. Cortissoz

The necessity of a Maximum Principle arises naturally when one is interested in the study of qualitative properties of solutions to partial differential equations. In general, to ensure the validity of these kind of principles one has to…

Analysis of PDEs · Mathematics 2023-10-04 Andrea Bisterzo

In this paper we develop a comprehensive study on principal eigenvalues and both the (weak and strong) maximum and comparison principles related to an important class of nonlinear systems involving fractional $m$-Laplacian operators.…

We study the generalized eigenvalue problem on the whole space for a class of integro-differential elliptic operators. The nonlocal operator is over a finite measure, but this has no particular structure. Some of our results even hold for…

Analysis of PDEs · Mathematics 2022-11-24 Ari Arapostathis , Anup Biswas , Prasun Roychowdhury

Under the lack of variational structure and nondegeneracy, we investigate three notions of \textit{generalized principal eigenvalue} for a general infinity Laplacian operator with gradient and homogeneous term. A Harnack inequality and…

Analysis of PDEs · Mathematics 2022-02-07 Anup Biswas , Hoang-Hung Vo
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