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We consider singular quasilinear elliptic systems with homogeneous Dirichlet boundary condition. Using Leray-Schauder topological degree, combined with the sub-supersolutions method and suitable truncation arguments, we establish the…

Analysis of PDEs · Mathematics 2025-10-27 Nouredine Medjoudj , Abdelkrim Moussaoui

Existence of two solutions to a parametric singular quasi-linear elliptic problem is proved. The equation is driven by the {\Phi}-Laplacian operator and the reaction term can be non-monotone. The main tools employed are a local minimum…

Analysis of PDEs · Mathematics 2022-07-01 Pasquale Candito , Umberto Guarnotta , Roberto Livrea

The aim of this paper is to prove the existence of multiple solutions for a family of nonlinear elliptic systems in divergence form coupled with a pointwise gradient constraint: \begin{align*} \left\{ \begin{array}{ll}…

Analysis of PDEs · Mathematics 2022-06-08 Ali Taheri , Vahideh Vahidifar

We prove the existence of one positive, one negative, and one sign-changing solution of a $p$-Laplacian equation on $\mathbb{R}^N$, with a $p$-superlinear subcritical term. Sign-changing solutions of quasilinear elliptic equations set on…

Analysis of PDEs · Mathematics 2014-05-28 Ann Derlet , François Genoud

In this work, we study the existence and nonexistence of solution for strongly coupled elliptic systems to m-parameters.

Analysis of PDEs · Mathematics 2021-01-05 Felipe Costa , Gil F. de Souza , Marcos Montenegro

The existence of a nontrivial solution is proved for a class of quasilinear elliptic equations involving, as principal part, either the p-Laplace operator or the operator related to the p-area functional, and a nonlinearity with p-linear…

Analysis of PDEs · Mathematics 2018-03-19 Silvia Cingolani , Marco Degiovanni , Giuseppina Vannella

In this work, we study a quasilinear elliptic problem involving the 1-laplacian operator, with a discontinuous, superlinear and subcritical nonlinearity involving the Heaviside function $H(\cdot - \beta)$. Our approach is based on an…

Analysis of PDEs · Mathematics 2022-10-21 Marcos T. O. Pimenta , Gelson C. G. Santos , João R. Santos Júnior

In this paper, we consider the following Schr\"odinger-Poisson system with $p$-laplacian \begin{equation} \begin{cases} -\Delta_{p}u+V(x)|u|^{p-2}u+\phi|u|^{p-2}u=f(u)\qquad&x\in\mathbb{R}^{3},\newline…

Analysis of PDEs · Mathematics 2022-12-07 Shuo Ren , Huixing Zhang , Zhen Cheng , Yan Gao

we study on compact Riemannian manifolds with boundary, the problems of existence and multiplicity of solutions to a Neumann problem involving the p-Laplacian operator and critical Sobolev exponents.

Analysis of PDEs · Mathematics 2010-08-19 Youssef Maliki

In this work, we have proved a version of the Hardy-Littlewood-Sobolev inequality for variable exponents. After we use the variational method to establish the existence of solution for a class of Choquard equations involving the…

Analysis of PDEs · Mathematics 2017-07-13 Claudianor O. Alves , Leandro da S. Tavares

This paper is concerned with a class of nonhomogeneous quasilinear elliptic system driven by the locally symmetric potential and the small continuous perturbations in the whole-space $\mathbb{R}^N$. By a variant of Clark's theorem without…

Analysis of PDEs · Mathematics 2023-08-14 Cuiling Liu , Xingyong Zhang , Liben Wang

We study a class of linearly coupled system of quasilinear equations. Under some assumptions on the nonlinear terms, we establish some results about the existence and regularity of vector solutions for the p-Laplacian systems by using…

Analysis of PDEs · Mathematics 2018-01-22 Yong Ao , Jiaqi Wang , Wenming Zou

This paper addresses a class of elliptic problems involving the superposition of nonlinear fractional operators with the critical Sobolev exponent in the sublinear regimes. We establish the existence of infinitely many nontrivial weak…

Analysis of PDEs · Mathematics 2026-02-17 Souvik Bhowmick , Sekhar Ghosh , Vishvesh Kumar

Existence, regularity and location of solutions to quasilinear singular elliptic systems with general gradient dependence are established developing a method of sub-supersolution. The abstract theorems involving sub-supersolutions are…

Analysis of PDEs · Mathematics 2025-08-11 Abdelkrim Moussaoui

In this paper, we study a class of quasilinear elliptic equations involving both local and nonlocal operators with variable exponents. The problem exhibits singular nonlinearities along with a subcritical superlinear growth term and a…

Analysis of PDEs · Mathematics 2026-04-08 Shammi Malhotra , Ambesh Kumar Pandey , K. Sreenadh

The paper is devoted to the existence of positive solutions of nonlinear elliptic equations with $p$-Laplacian. We provide a general topological degree that detects solutions of the problem $$ \{{array}{l} A(u)=F(u) u\in M {array}. $$ where…

Analysis of PDEs · Mathematics 2012-10-11 Aleksander Cwiszewski , Mateusz Maciejewski

In this paper we study the existence of multiple nontrivial positive weak solutions to the following system of problems. \begin{align*} \begin{split} -\Delta_{p}u-\Delta_q u &= \lambda f(x)|u|^{r-2}u+\nu\frac{1-\alpha}{2-\alpha-\beta}h(x)…

Analysis of PDEs · Mathematics 2020-05-19 Debajyoti Choudhuri , Kamel Saoudi , Kratou Mouna

We study a nonlinear, nonlocal Dirichlet problem driven by the degenerate fractional p-Laplacian via a combination of topological methods (degree theory for operators of monotone type) and variational methods (critical point theory). We…

Analysis of PDEs · Mathematics 2023-03-01 Antonio Iannizzotto

The aim of this paper is to establish two results about multiplicity of solutions to problems involving the $1-$Laplacian operator, with nonlinearities with critical growth. To be more specific, we study the following problem $$ \left\{…

Analysis of PDEs · Mathematics 2021-07-02 Claudianor O. Alves , Anass Ourraoui , Marcos T. O. Pimenta

In this paper, we prove multiplicity of solutions for a class of quasilinear problems in $ \mathbb{R}^{N} $ involving variable exponents and nonlinearities of concave-convex type. The main tools used are variational methods, more precisely,…

Analysis of PDEs · Mathematics 2014-09-04 Claudianor O. Alves , José L. P. Barreiro , José V. A. Gonçalves