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This paper deals with some classes of Kirchhoff type problems on a double phase setting and with nonlinear boundary conditions. Under general assumptions, we provide multiplicity results for such problems in the case when the perturbations…

Analysis of PDEs · Mathematics 2021-12-16 Alessio Fiscella , Greta Marino , Andrea Pinamonti , Simone Verzellesi

In this paper we present new embedding results for Musielak-Orlicz Sobolev spaces of double phase type. Based on the continuous embedding of $W^{1,\mathcal{H}}(\Omega)$ into $L^{\mathcal{H}_*}(\Omega)$, where $\mathcal{H}_*$ is the Sobolev…

Analysis of PDEs · Mathematics 2023-09-08 Ky Ho , Patrick Winkert

In this article, we study a double-phase variable-exponent Kirchhoff problem and show the existence of at least three solutions. The proposed model, as a generalization of the Kirchhoff equation, is interesting since it is driven by a…

Analysis of PDEs · Mathematics 2025-07-31 Mustafa Avci

We prove existence and comparison results for multi-valued variational inequalities in a bounded domain $\Omega$ of the form \begin{equation*} u\in K\,:\, 0 \in Au+\partial I_K(u)+\mathcal{F}(u)+\mathcal{F}_\Gamma(u)\quad\text{in…

Analysis of PDEs · Mathematics 2023-03-31 Siegfried Carl , Vy Khoi Le , Patrick Winkert

In this paper, we study the existence of non-negative non-trivial solutions for a class of double-phase problems where the source term is a Caratheodory function that satisfies the Ambrosetti-Rabinowitz type condition in the framework of…

Analysis of PDEs · Mathematics 2021-10-08 Ahmed Aberqi , Jaouad Bennouna , Omar Benslimane , Maria Alessandra Ragusa

In this paper we generalize the famous result of [FKS] to the double phase model. In particular, we work with minimal assumptions on the modulating coefficient by introducing a Muckenhoupt-type condition on generalized Orlicz spaces. We…

Analysis of PDEs · Mathematics 2026-01-29 Daviti Adamadze , Lars Diening , Tengiz Kopaliani , Jihoon Ok

In this paper we introduce a new class of quasilinear elliptic equations driven by the so-called double phase operator with variable exponents. We prove certain properties of the corresponding Musielak-Orlicz Sobolev spaces (an equivalent…

Analysis of PDEs · Mathematics 2022-04-04 Ángel Crespo-Blanco , Leszek Gasiński , Petteri Harjulehto , Patrick Winkert

In this paper, we aim to tackle the questions of existence and multiplicity of solutions to a new class of $\kappa(\xi)$-Kirchhoff-type equation utilizing a variational approach. Further, we research the results from the theory of variable…

General Mathematics · Mathematics 2023-11-21 J. Vanterler da C. Sousa , Kishor D. Kucche , Juan J. Nieto

In this paper, we consider the multiplicity of solutions for a class of Kirchhoff type problems with sub-linear and critical terms on an unbounded domain. With the aid of Ekeland's variational principle and the concentration compactness…

Functional Analysis · Mathematics 2016-05-23 Xiaofei Cao , Junxiang Xu , Jun Wang

In this paper, we study the existence and multiplicity of weak solutions to a general type of Kirchhoff equations in magnetic fractional Orlicz-Sobolev spaces. Specifically, we appeal to Critical Point Theory to prove the existence of…

Analysis of PDEs · Mathematics 2022-07-15 Pablo Ochoa

In this paper we study quasilinear elliptic Kirchhoff equations driven by a non-homogeneous operator with unbalanced growth and right-hand sides that consist of sub-linear, possibly singular, and super-linear reaction terms. Under very…

Analysis of PDEs · Mathematics 2025-10-31 Umberto Guarnotta , Patrick Winkert

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

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 a new class of multi phase operators with variable exponents, which reflects the inhomogeneous characteristics of hardness changes when multiple different materials are combined together. We at first deal with the…

Analysis of PDEs · Mathematics 2024-07-22 Guowei Dai , Francesca Vetro

This work is concerned with the existence and multiplicity of solutions for the following class of quasilinear problems $$ -\Delta_{\Phi}u+\phi(|u|)u=f(u)~\text{in} ~\Omega_{\lambda}, u(x)>0 ~\text{in}~\Omega_{\lambda}, u=0~ \mbox{on}…

Analysis of PDEs · Mathematics 2016-04-05 Karima Ait-Mahiout , Claudianor O. Alves

We study Brezis-Nirenberg type problems, governed by the double phase operator $- \mathrm{div}\left(|\nabla u|^{p-2}\, \nabla u + a(x)\, |\nabla u|^{q-2}\, \nabla u\right)$, that involve a critical nonlinearity of the form $|u|^{p^\ast -…

Analysis of PDEs · Mathematics 2024-06-06 Francesca Colasuonno , Kanishka Perera

In this paper, we obtain the existence of weak solutions to the Choquard-Kirchhoff type critical multiphase problem: \begin{equation*} \left\{\begin{array}{cc} &-M(\varphi_{\h}(\lvert{\nabla u}\rvert))div(\lvert{\nabla…

Analysis of PDEs · Mathematics 2025-01-08 Anupma Arora , Gaurav Dwivedi

In this paper, we study a class of nonlocal multi-phase variable exponent problems within the framework of a newly introduced Musielak-Orlicz Sobolev space. We consider two problems, each distinguished by the type of nonlinearity it…

Analysis of PDEs · Mathematics 2025-02-11 Mustafa Avci

In this paper, we study a class of singular double phase problems defined on Minkowski spaces in terms of Finsler manifolds and with right-hand sides that allow a certain type of critical growth for such problems. Under very general…

Analysis of PDEs · Mathematics 2021-03-18 Csaba Farkas , Patrick Winkert

In this paper, we are concerned with a Kirchhoff problem in the presence of a strongly-singular term perturbed by a discontinuous nonlinearity of the Heaviside type in the setting of Orlicz-Sobolev space. The presence of both…

Analysis of PDEs · Mathematics 2019-01-03 Carlos Alberto Santos , Lais Santos , Marcos L. M. Carvalho
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