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In this paper, we are interested in studying the existence or non-existence of solutions for a class of elliptic problems involving the $N$-Laplacian operator in the whole space. The nonlinearity considered involves critical Trudinger-Moser…

Analysis of PDEs · Mathematics 2020-09-09 Anderson L. A. de Araujo , Luiz F. O. Faria

In this work, we study the existence, non-existence, and uniqueness results for nonlocal elliptic equations involving logarithmic Laplacian, and subcritical, critical, and supercritical logarithmic nonlinearities. The Poho\u zaev's identity…

Analysis of PDEs · Mathematics 2025-04-29 Rakesh Arora , Jacques Giacomoni , Arshi Vaishnavi

In this note a critical point result for differentiable functionals is exploited in order to prove that a suitable class of one-dimensional fractional problems admits at least one non-trivial solution under an asymptotical behaviour of the…

Classical Analysis and ODEs · Mathematics 2014-02-10 Marek Galewski , Giovanni Molica Bisci

In the present work we briefly explain how to adapt techniques already used in fractional and $p$-fractional Laplacian cases to obtain the existence of a nontrivial solution at the mountain pass level and a nontrivial ground state solution,…

Analysis of PDEs · Mathematics 2021-07-20 Eduardo de Souza Böer , Olímpio Hiroshi Miyagaki

We prove existence and multiplicity results for a $N$-Laplacian problem with a critical exponential nonlinearity that is a natural analog of the Brezis-Nirenberg problem for the borderline case of the Sobolev inequality. This extends…

Analysis of PDEs · Mathematics 2016-01-05 Yang Yang , Kanishka Perera

This article investigates the existence, nonexistence, and multiplicity of positive solutions to the sublinear fractional elliptic problem $(P_{\lambda}^s)$. We begin by establishing several a priori estimates that provide regularity…

Analysis of PDEs · Mathematics 2025-11-12 Jefferson Abrantes , Rohit Kumar , Abhishek Sarkar

In this paper, we analyze the existence of solution for a fractional elliptic system coupled by critical nonlinearities and endowed with mixed Dirichlet-Neumann boundary conditions. By means of variational methods and an…

Analysis of PDEs · Mathematics 2025-11-26 R. Kumar , A. Ortega

This paper deals with the existence of solutions to a class of fourth order nonlinear elliptic equations. The technique used relies on critical points theory. The solutions appeared as critical points of a functional restricted to a…

Differential Geometry · Mathematics 2010-10-06 Mohammed Benalili , Kamel Tahri

Existence and non-existence results are established for quasilinear elliptic problems with nonlinear boundary conditions and lack of compactness. The proofs combine variational methods with the geometrical feature, due to the competition…

Analysis of PDEs · Mathematics 2007-06-19 Roberta Filippucci , Patrizia Pucci , Vicentiu Radulescu

This work is devoted to study the existence of infinitely many weak solutions to nonlocal equations involving a general integrodifferential operator of fractional type. These equations have a variational structure and we find a sequence of…

Analysis of PDEs · Mathematics 2013-12-16 Giovanni Molica Bisci

This work is devoted to the study of the existence of at least one weak solution to nonlocal equations involving a general integro-differential operator of fractional type. As a special case, we derive an existence theorem for the…

Analysis of PDEs · Mathematics 2020-04-22 Giovanni Molica Bisci , Dušan D. Repovš

In this paper, we study critical semilinear nonlocal elliptic equations involving the logarithmic Schr\"odinger operator and its fractional pseudo-relativistic counterpart, both arising in quantum models with nonlocal and relativistic…

Analysis of PDEs · Mathematics 2026-02-10 Huyuan Chen , Rui Chen , Bobo Hua

We investigate a class of quasi-linear nonlocal problems, including as a particular case semi-linear problems involving the fractional Laplacian and arising in the framework of continuum mechanics, phase transition phenomena, population…

Analysis of PDEs · Mathematics 2014-03-24 Antonio Iannizzotto , Shibo Liu , Kanishka Perera , Marco Squassina

In this article, we prove the existence of solutions to a nonlinear nonlocal elliptic problem with a singualrity and a discontinuous critical nonlinearity which is given as follows. \begin{align} \begin{split}\label{main_prob}…

Analysis of PDEs · Mathematics 2021-08-04 Kamel Saoudi , Akasmika Panda , Debajyoti Choudhuri

Some existence results for a parametric Dirichlet problem defined on the Sierpi\'nski fractal are proved. More precisely, a critical point result for differentiable functionals is exploited in order to prove the existence of a well…

Analysis of PDEs · Mathematics 2016-08-30 Massimiliano Ferrara , Giovanni Molica Bisci , Dušan Repovš

We establish the existence and nonexistence of entire solutions to a semilinear elliptic problem whose nonlinearity is the critical power multiplied by a function that takes the value 1 in an open bounded region and the value -1 in its…

Analysis of PDEs · Mathematics 2025-02-28 Mónica Clapp , Jorge Faya , Alberto Saldaña

This paper studies the properties of solutions to a class of elliptic and parabolic problems involving the fractional Laplacian. By applying the mountain pass theorem, we prove the existence of bounded classical positive solutions in the…

Analysis of PDEs · Mathematics 2025-09-30 Haipeng Lu , Mei Yu

By means of variational methods we investigate existence, non-existence as well as regularity of weak solutions for a system of nonlocal equations involving the fractional laplacian operator and with nonlinearity reaching the critical…

Analysis of PDEs · Mathematics 2015-08-24 Luiz Faria , Olimpio Miyagaki , Fabio Pereira , Marco Squassina , Chengxiang Zhang

Recently, great attention has been focused on the study of fractional and non-local operators of elliptic type, both for pure mathematical research and in view of concrete real-world applications. Our problem is related to the fractional…

Analysis of PDEs · Mathematics 2025-06-25 Sana Benhafsia , Rejeb Hadiji

We consider some nonlinear fractional Schr\"odinger equations with magnetic field and involving continuous nonlinearities having subcritical, critical or supercritical growth. Under a local condition on the potential, we use minimax methods…

Analysis of PDEs · Mathematics 2019-03-26 Vincenzo Ambrosio