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In this paper we study quasilinear elliptic equations driven by the double phase operator and a right-hand side which has the combined effect of a singular and of a parametric term. Based on the fibering method by using the Nehari manifold…

Analysis of PDEs · Mathematics 2022-03-29 Wulong Liu , Guowei Dai , Nikolaos S. Papageorgiou , Patrick Winkert

This paper is concerned with a singular multi-phase problem with variable singularities. The main tool used is the Nehari manifold approach. Existence of at least two positive solutions with positive-negative energy levels are obtained.

Analysis of PDEs · Mathematics 2025-02-17 Mustafa Avci

In this present paper, we investigate a new class of singular double phase $p$-Laplacian equation problems with a $\psi$-Hilfer fractional operator combined from a parametric term. Motivated by the fibering method using the Nehari manifold,…

General Mathematics · Mathematics 2023-10-11 J. Vanterler da C. Sousa , Karla B. Lima , Leandro S. Tavares

In this paper, we study multiplicity results for double phase problems of Kirchhoff type with right-hand sides that include a parametric singular term and a nonlinear term of subcritical growth. Under very general assumptions on the data,…

Analysis of PDEs · Mathematics 2021-11-16 Rakesh Arora , Alessio Fiscella , Tuhina Mukherjee , Patrick Winkert

In this paper we consider quasilinear elliptic equations driven by the variable exponent double phase operator with superlinear right-hand sides. Under very general assumptions on the nonlinearity, we prove a multiplicity result for such…

Analysis of PDEs · Mathematics 2023-08-22 Ángel Crespo-Blanco , Patrick Winkert

In this paper, we study a class of double phase systems which contain the singular and mixed nonlinear terms. Unlike the single equation, the mixed nonlinear terms make the problem more complicate. The geometry of the fibering mapping has…

Analysis of PDEs · Mathematics 2025-03-27 Zhanbing Bai , Yizhe Feng

In this paper we study quasilinear elliptic equations driven by the so-called double phase operator and with a nonlinear boundary condition. Due to the lack of regularity, we prove the existence of multiple solutions by applying the Nehari…

Analysis of PDEs · Mathematics 2020-11-17 Leszek Gasinski , Patrick Winkert

This article consists of study of anisotropic double phase problems with singular term and sign changing subcritical as well as critical nonlinearity. Seeking the help of well known Nehari manifold technique, we establish existence of at…

Analysis of PDEs · Mathematics 2022-03-01 Prashanta Garain , Tuhina Mukherjee

We study the combined effect of concave and convex nonlinearities on the number of positive solutions for a fractional system involving critical Sobolev exponents. With the help of the Nehari manifold, we prove that the system admits at…

Analysis of PDEs · Mathematics 2016-01-12 Xiaoming He , Marco Squassina , Wenming Zou

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

This article investigates the existence, non-existence, and multiplicity of weak solutions for a parameter-dependent nonlocal Schr\"odinger-Kirchhoff type problem on $\mathbb R^N$ involving singular non-linearity. By performing fine…

Analysis of PDEs · Mathematics 2023-09-19 Deepak Kumar Mahanta , Tuhina Mukherjee , Abhishek Sarkar

The purpose of this paper is to study a class of double phase problems, with a singular term and a superlinear parametric term on the right-hand side. Using the method of Nehari manifold combined with the fibering maps, we prove that for…

Analysis of PDEs · Mathematics 2022-01-05 Ahmed Aberqi , Jaouad Bennouna , Omar Benslimane , Maria Alessandra Ragusa

We study the existence of positive solutions for a class of double phase Dirichlet equations which have the combined effects of a singular term and of a parametric superlinear term. The differential operator of the equation is the sum of a…

Analysis of PDEs · Mathematics 2021-05-17 Nikolaos S. Papageorgiou , Dušan D. Repovš , Calogero Vetro

In this paper we establish the existence of at least two weak solutions for the following fractional Kirchhoff problem involving singular and exponential nonlinearity \begin{equation*} \left\{\begin{split}…

Analysis of PDEs · Mathematics 2020-08-25 Tuhina Mukherjee , Mingqi Xiang

The aim of this paper is to extend the Nehari manifold method from the variational setting to the nonvariational framework of fixed point equations. This is achieved by constructing a radial energy functional that generalizes the standard…

Analysis of PDEs · Mathematics 2025-12-09 Radu Precup , Andrei Stan

The present paper deals with a parametrized Kirchhoff type problem involving a critical nonlinearity in high dimension. Existence, non existence and multiplicity of solutions are obtained under the effect of a subcritical perturbation by…

Analysis of PDEs · Mathematics 2020-06-11 F. Faraci , K. Silva

In this paper we study quasilinear elliptic equations driven by the double phase operator along with a reaction that has a singular and a parametric superlinear term and with a nonlinear Neumann boundary condition of critical growth. Based…

Analysis of PDEs · Mathematics 2022-02-23 Ángel Crespo-Blanco , Nikolaos S. Papageorgiou , Patrick Winkert

This paper is concerned with variational continuation of branches of solutions for nonlinear boundary value problems, which involve the p-Laplacian, the indefinite nonlinearity, and depend on the real parameter $\lambda$. A special focus is…

Analysis of PDEs · Mathematics 2019-06-06 Yavdat Il'yasov , Kaye Silva

In this paper we study the existence and multiplicity of two distinct nontrivial weak solutions of the following equation in Nehari manifold. We have also proved that these solutions are in $L^{\infty}(\Omega)$. \begin{align*} \begin{split}…

Analysis of PDEs · Mathematics 2019-07-23 Amita Soni , D. Choudhuri

We consider a system of quasilinear elliptic equations, with indefinite super-linear nonlinearity, depending on two real parameters $\lambda,\mu$. By using the Nehari manifold and the notion of extremal parameter, we extend some results…

Analysis of PDEs · Mathematics 2019-06-06 Kaye Silva , Abiel Macedo
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