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The existence of positive weak solutions to a singular quasilinear elliptic system in the whole space is established via suitable a priori estimates and Schauder's fixed point theorem.

Analysis of PDEs · Mathematics 2019-09-24 S. A. Marano , G. Marino , A. Moussaoui

This article sets forth results on the existence, positivity and boundedness of solutions for quasilinear elliptic systems involving p-Laplacian and q-Laplacian operators. The approach combines Schaefer's fixed point, comparison principle…

Analysis of PDEs · Mathematics 2019-08-05 Abdelkrim Moussaoui , Jean Vélin

We establish existence and regularity of positive solutions for a class of quasilinear elliptic systems with singular and superlinear terms. The approach is based on sub-supersolution methods for systems of quasilinear singular equations…

Analysis of PDEs · Mathematics 2016-04-26 Brahim Khodja , Abdelkrim Moussaoui

The paper deals with the existence of solutions for quasilinear elliptic systems involving singular and convection terms with variable exponents. Our approach combines the sub-supersolutions method and Schauder's fixed point theorem.

Analysis of PDEs · Mathematics 2022-07-07 Abdelkrim Moussaoui , Dany Nabab , Jean Velin

In this paper, we prove existence and regularity of positive solutions for singular quasilinear elliptic systems involving gradient terms. Our approach is based on comparison properties, a priori estimates and Schauder's fixed point…

Analysis of PDEs · Mathematics 2021-03-16 Halima Dellouche , Abdelkrim Moussaoui

In this paper we establish existence of smooth positive solutions for a singular quasilinear elliptic system involving gradient terms. The approach combines sub-supersolutions method and Schauder's fixed point theorem.

Analysis of PDEs · Mathematics 2019-06-03 Pasquale Candito , Roberto Livrea , Abdelkrim Moussaoui

We study a boundary-value quasilinear elliptic problem on a generic time scale. Making use of the fixed-point index theory, sufficient conditions are given to obtain existence, multiplicity, and infinite solvability of positive solutions.

Analysis of PDEs · Mathematics 2007-10-08 Moulay Rchid Sidi Ammi , Delfim F. M. Torres

This paper deals with existence and regularity of positive solutions of singular elliptic problems on a smooth bounded domain with Dirichlet boundary conditions involving the $\Phi$-Laplacian operator. The proof of existence is based on a…

Analysis of PDEs · Mathematics 2017-03-28 José V. A. Goncalves , Marcos L. M. Carvalho , Carlos Alberto Santos

In this paper we analyze the existence of large positive radial solutions to some quasilinear elliptic systems. Also, a non-radially symmetric solution is obtained by using a lower and upper solution method. The equations are coupled by…

Classical Analysis and ODEs · Mathematics 2011-05-16 Dragos-Patru Covei

The existence of entire solutions to quasilinear elliptic systems exhibiting both singular and convective reaction terms is discussed. An auxiliary problem, obtained by `freezing' the convection terms and `shifting' the singular ones, is…

Analysis of PDEs · Mathematics 2021-07-14 Umberto Guarnotta

The existence of a positive entire weak solution to a singular quasi-linear elliptic system with convection terms is established, chiefly through perturbation techniques, fixed point arguments, and a priori estimates. Some regularity…

Analysis of PDEs · Mathematics 2021-02-22 Umberto Guarnotta , Salvatore A. Marano , Abdelkrim Moussaoui

In this paper we present some very recent results regarding existence, uniqueness, and multiplicity of solutions for quasilinear elliptic equations and systems, exhibiting both singular and convective reaction terms. The importance of…

Analysis of PDEs · Mathematics 2022-04-20 Umberto Guarnotta

This paper is concerned with existence and qualitative properties of positive solutions of semilinear elliptic equations in bounded domains with Dirichlet boundary conditions. We show the existence of positive solutions in the vicinity of…

Analysis of PDEs · Mathematics 2025-11-26 François Hamel , Nikolai Nadirashvili

In this paper we study quasilinear elliptic systems with nonlinear boundary condition with fully coupled perturbations even on the boundary. Under very general assumptions our main result says that each weak solution of such systems belongs…

Analysis of PDEs · Mathematics 2019-10-04 Greta Marino , Patrick Winkert

In this paper we establish the existence of two positive solutions for a class of quasilinear singular elliptic systems. The main tools are sub and supersolution method and Leray-Schauder Topological degree.

Analysis of PDEs · Mathematics 2016-06-28 Claudianor O. Alves , Abdelkrim Moussaoui

In this paper we establish existence, nonexitence and regularity of positive solutions for a class of singular quasilinear elliptic systems subject to (super-) homogeneous condition. The approach is based on sub-supersolution methods for…

Analysis of PDEs · Mathematics 2019-06-03 Hana Didi , Brahim Khodja , Abdelkrim Moussaoui

In this paper a quasi-linear elliptic equation in the whole Euclidean space is considered. The nonlinearity of the equation is assumed to have exponential growth or have critical growth in view of Trudinger-Moser type inequality. Under some…

Analysis of PDEs · Mathematics 2011-06-24 Yunyan Yang

In this paper I prove the existence of a positive stationary solution for a generic quasilinear model of structured population. The existence is proved using Schauder's fixed point theorem. The theorem is applied to a hierarchically…

Analysis of PDEs · Mathematics 2015-09-09 Stefano Bertoni

We study the behaviour near a boundary point a of any positive solution of a nonlinear elliptic equations with forcing term which vanishes on the boundary except at a. Our results are based upon a priori estimates for solutions and…

Analysis of PDEs · Mathematics 2007-05-23 Marie-Francoise Bidaut-Veron , Augusto Ponce , Laurent Veron

The focus of this study is on exploring some qualitative properties of solutions to a class of semilinear elliptic problems in bounded domains, where the boundary conditions depend non-locally on the unknown solution at specified interior…

Analysis of PDEs · Mathematics 2026-03-16 Chiun-Chang Lee
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