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In the present paper we study the existence of solutions for some classes of singular systems involving the p(x) and q(x) Laplacian operators. The approach is based on bifurcation theory and subsupersolution method for systems of…

Analysis of PDEs · Mathematics 2017-02-22 Claudianor O. Alves , Abdelkrim Moussaoui , Leandro da S. Tavares

Two opposite constant-sign solutions to a non-variational p-Laplacian system with Robin boundary conditions are obtained via sub-super-solution techniques. A third nontrivial one comes out by means of topological degree arguments.

Analysis of PDEs · Mathematics 2022-07-14 Umberto Guarnotta , Salvatore A. Marano , Abdelkrim Moussaoui

It is established existence, uniqueness and multiplicity of solutions for a quasilinear elliptic problem problems driven by $\Phi$-Laplacian operator. Here we consider the reflexive and nonreflexive cases using an auxiliary problem. In…

Analysis of PDEs · Mathematics 2017-09-19 M. L. M. Carvalho , J. V. Goncalves , Edcarlos D. da Silva , K. O. Silva

We establish the existence of multiple solutions for Gierer-Meinhardt system involving Neumann boundary conditions. The approach combines the methods of sub-supersolution and Leray-Schauder topological degree.

Analysis of PDEs · Mathematics 2022-12-08 Abdelkrim Moussaoui

We discuss the existence and regularity of solutions to a quasi-linear elliptic equation involving a Leray-Lions operator and a convection term with superlinear growth. In particular, equations involving the p-Laplacian are covered. This…

Analysis of PDEs · Mathematics 2024-07-24 Genival da Silva

In the present paper we study the existence of solutions for a class of nonlocal system involving the p(x)-Laplacian operator. The approach is based on a new sub-supersolution result.

Analysis of PDEs · Mathematics 2017-11-01 Gelson C. G. dos Santos , Giovany M. Figueiredo , Leandro S. Tavares

It is established some existence and multiplicity of solution results for a quasilinear elliptic problem driven by $\Phi$-Laplacian operator. One of these solutions is built as a ground state solution. In order to prove our main results we…

Analysis of PDEs · Mathematics 2017-03-28 M. L. M. Carvalho , J. V. Goncalves , C. Goulart , O. H. Miyagaki

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 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 the present paper we study the existence of solutions for some nonlocal problems involving the p(x)-Laplacian operator. The approach is based on a new sub-supersolution method

Analysis of PDEs · Mathematics 2017-04-11 Gelson C. G. dos Santos , Giovany M. Figueiredo , Leandro da S. Tavares

We establish the existence of multiple solutions for singular quasilinear elliptic problems with a precise sign information: two opposite constant sign solutions and a nodal solution. The approach combines sub-supersolutions method and…

Analysis of PDEs · Mathematics 2023-10-30 Dumitru Motreanu , Abdelkrim Moussaoui

In this paper, we obtain infinitely many solutions for a class of quasilinear Schr\"{o}dinger-Poisson system which is coupled by a Schr\"{o}dinger equation of $p$-Laplacian and a Poisson equation of $q$-Laplacian, involving with concave and…

Analysis of PDEs · Mathematics 2025-09-22 Yao Du , Jiahao Peng

In this paper we prove the existence of multiple solutions for a quasilinear elliptic boundary value problem, when the p-derivative at zero and the p-derivative at infinity of the nonlinearity are greater than the first eigenvalue of the…

Analysis of PDEs · Mathematics 2016-07-15 Jorge Cossio , Sigifredo Herrón , Carlos Vélez

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

The aim of this paper is to extend previous results regarding the multiplicity of solutions for quasilinear elliptic problems with critical growth to the variable exponent case. We prove, in the spirit of \cite{DPFBS}, the existence of at…

Analysis of PDEs · Mathematics 2009-12-18 Analía Silva

The main purpose of this paper is to establish the existence of positive solutions to a class of quasilinear elliptic equations involving the (p-q)-Laplacian operator. We consider a nonlinearity that can be subcritical at infinity and…

Analysis of PDEs · Mathematics 2015-08-27 M. J. Alves , R. B. Assunção , O. H. Miyagaki

In this paper, we deal with a singular quasilinear critical elliptic equation of Lichnerowicz type involving the p-Laplacian operator. With the help of the subcritical approach from variational method, we obtain the non-existence,…

Analysis of PDEs · Mathematics 2020-04-24 Nanbo Chen , Xiaochun Liu

The present paper studies the fractional $p$-Laplacian boundary value problems with jumping nonlinearities at zero or infinity and obtain the existence of multiple solutions and sign-changing solutions by constructing the suitable…

Analysis of PDEs · Mathematics 2020-09-09 Debangana Mukherjee

In this paper, existence and localization results of $C^1$-solutions to elliptic Dirichlet boundary value problems are established. The approach is based on the nonlinear alternative of Leray-Schauder.

Analysis of PDEs · Mathematics 2008-05-02 Quoc Anh Ngo

We consider the existence and multiplicity of solutions for a class of quasi-linear Schr\"{o}dinger equations which include the modified nonlinear Schr\"{o}dinger equations. A new perturbation approach is used to treat the sub-cubic…

Analysis of PDEs · Mathematics 2022-09-13 Chen Huang , Jianjun Zhang , Xuexiu Zhong
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