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In this work, we study the non-local analogue of Brezis-Nirenberg and logistic type elliptic equations involving the logarithmic Laplacian and critical logarithmic non-linearity with superlinear-subcritical perturbation. In the first part…

Analysis of PDEs · Mathematics 2025-09-18 Rakesh Arora , Jacques Giacomoni , Arshi Vaishnavi

In this paper, we derive a new $p$-Logarithmic Sobolev inequality and optimal continuous and compact embeddings into Orlicz-type spaces of the function space associated with the logarithmic $p$-Laplacian. As an application of these results,…

Analysis of PDEs · Mathematics 2025-10-31 Rakesh Arora , Jacques Giacomoni , Hichem Hajaiej , Arshi Vaishnavi

In this paper we study a nonlocal critical growth elliptic problem driven by the fractional Laplacian in presence of jumping nonlinearities. In the main results of the paper we prove the existence of a nontrivial solution for the problem…

Analysis of PDEs · Mathematics 2026-03-12 Giovanni Molica Bisci , Kanishka Perera , Raffaella Servadei , Caterina Sportelli

In this work, we show the existence of an unbounded sequence of minimax eigenvalues for the logarithmic $p$-Laplacian via the $\mathbb{Z}_2$-cohomological index of Fadell and Rabinowitz. As an application of these minimax eigenvalues and…

Analysis of PDEs · Mathematics 2025-12-29 Rakesh Arora , Hichem Hajaiej , Kanishka Perera

Non-existence and uniqueness results are proved for several local and non-local supercritical bifurcation problems involving a semilinear elliptic equation depending on a parameter. The domain is star-shaped but no other symmetry assumption…

Analysis of PDEs · Mathematics 2015-05-13 Jean Dolbeault , Robert Stanczy

In this paper we prove existence, uniqueness of weak solutions of the following nonlocal nonlinear logistic equation \begin{equation*} \begin{cases} (-\Delta)_p^s u_\lambda=\lambda u_\lambda^q - b(x)u_\lambda^r \quad \text{in} \;\Omega,\\…

Analysis of PDEs · Mathematics 2026-01-13 Loïc Constantin , Carlos Alberto Santos , Guillaume Warnault

We study the existence of nontrivial solutions for a nonlinear fractional elliptic equation in presence of logarithmic and critical exponential nonlinearities. This problem extends [5] to fractional $N/s$-Laplacian equations with…

Analysis of PDEs · Mathematics 2021-05-25 Yuanyuan Zhang , Yang Yang

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 article, we study the following nonlinear doubly nonlocal problem involving the fractional Laplacian in the sense of Hardy-Littlewood-Sobolev inequality \begin{equation*} \left\{\begin{aligned} (-\Delta)^s u & =…

Analysis of PDEs · Mathematics 2018-10-23 QianYu Hong , Yang Yang , Xudong Shang

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

In this work, we prove the existence of least energy nodal solution for a class of elliptic problem in both cases, bounded and unbounded domain, when the nonlinearity has exponential critical growth in $\mathbb{R}^2$. Moreover, we also…

Analysis of PDEs · Mathematics 2014-05-01 Claudianor O. Alves , Denilson S. Pereira

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

In this paper we establish, using variational methods combined with the Moser-Trudinger inequality, existence and multiplicity of weak solutions for a class of critical fractional elliptic equations with exponential growth without a…

Analysis of PDEs · Mathematics 2020-04-07 Hamilton Bueno , Eduardo Huerto Caqui , Olimpio Miyagaki

The theory of elliptic equations involving singular nonlinearities is well studied topic but the interaction of singular type nonlinearity with nonlocal nonlinearity in elliptic problems has not been investigated so far. In this article, we…

Analysis of PDEs · Mathematics 2020-02-10 Jacques Giacomoni , Divya Goel , K. Sreenadh

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

We investigate existence and uniqueness of solutions to second-order elliptic boundary value problems containing a power nonlinearity applied to a fractional Laplacian. We detect the critical power separating the existence from the…

Analysis of PDEs · Mathematics 2020-05-20 Nicola Abatangelo , Matteo Cozzi

By means of variational methods we establish existence and multiplicity of solutions for a class of nonlinear nonlocal problems involving the fractional p-Laplacian and a combined Sobolev and Hardy nonlinearity at subcritical and critical…

Analysis of PDEs · Mathematics 2018-02-19 Wenjing Chen , Sunra Mosconi , Marco Squassina

In this work, we shall investigate existence and multiplicity of solutions for a nonlocal elliptic systems driven by the fractional Laplacian. Specifically, we establish the existence of two positive solutions for following class of…

Analysis of PDEs · Mathematics 2024-11-12 Edcarlos D. Silva , Elaine A. F. Leite , Maxwell L. da Silva

In this thesis we investigate how the nonlocalities affect the study of different PDEs coming from physics, and we analyze these equations under almost optimal assumptions of the nonlinearity. In particular, we focus on the fractional…

Analysis of PDEs · Mathematics 2024-02-14 Marco Gallo

We study the question of the existence of infinitely many weak solutions for nonlocal equations of fractional Laplacian type with homogeneous Dirichlet boundary data, in presence of a superlinear term. Starting from the well-known…

Analysis of PDEs · Mathematics 2016-12-12 Giovanni Molica Bisci , Dušan Repovš , Raffaella Servadei
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