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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

In this paper we establish the existence of two positive solutions for a class of quasilinear singular elliptic systems. The main tools are sub and supersolution method and Leray-Schauder Topological degree.

Analysis of PDEs · Mathematics 2016-06-28 Claudianor O. Alves , Abdelkrim Moussaoui

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

It is established existence, uniqueness and multiplicity of solutions for a quasilinear elliptic problem problems driven by $\Phi$-Laplacian operator. Here we consider the reflexive and nonreflexive cases using an auxiliary problem. In…

Analysis of PDEs · Mathematics 2017-09-19 M. L. M. Carvalho , J. V. Goncalves , Edcarlos D. da Silva , K. O. Silva

In this paper, we consider the critical Lane-Emden system \begin{align*} \begin{cases} -\Delta u=K_1(y)v^p,\quad y\in \mathbb{R}^N,&\\ -\Delta v=K_2(y)u^q,\quad y\in \mathbb{R}^N,&\\ u,v>0, \end{cases} \end{align*} where $N\geq 5$, $p,q\in…

Analysis of PDEs · Mathematics 2024-01-19 Wenjing Chen , Xiaomeng Huang

The paper deals with the existence of non-radial solutions for an $N$-coupled nonlinear elliptic system. In the repulsive regime with some structure conditions on the coupling and for each symmetric subspace of rotation symmetry, we prove…

Analysis of PDEs · Mathematics 2023-09-12 Xiaopeng Huang , Haoyu Li , Zhi-Qiang Wang

A compactness theorem for volume-constrained almost-critical points of elliptic integrands is proven. The result is new even for the area functional, as almost-criticality is measured in an integral rather than in a uniform sense. Two main…

Analysis of PDEs · Mathematics 2018-08-15 M. G. Delgadino , F. Maggi , C. Mihaila , R. Neumayer

In this paper, we prove a Serrin-type result for an elliptic system of equations, overdetermined with both Dirichlet and a generalized Neumann conditions. With this tool, we characterize the critical shapes under volume constraint of some…

Analysis of PDEs · Mathematics 2024-10-10 Antonio Celentano , Carlo Nitsch , Cristina Trombetti

We present a combinatorial geometry and dynamical systems framework for the investigation and proof of the Minkowski conjecture about critical determinant of the region $ |x|^p + |y|^p < 1, p > 1. $ The application of the framework may…

Number Theory · Mathematics 2007-05-23 Nikolaj Glazunov

A symplectic realization and some symmetries of a Rikitake type system are presented.

Dynamical Systems · Mathematics 2014-04-29 Cristian Lazureanu , Tudor Binzar

When inclusions in a composite are separated by a very small gap, high contrast between the inclusion and matrix properties can induce strong amplification of the underlying field inside the narrow region. Quantifying this field…

Analysis of PDEs · Mathematics 2026-04-07 Hongjie Dong , Zhuolun Yang

We consider a class of singularly perturbed elliptic problems with nonautonomous asymptotically linear nonlinearities. The dependence on the spatial coordinates comes from the presence of a potential and of a function representing a…

Analysis of PDEs · Mathematics 2014-05-29 Liliane Maia , Eugenio Montefusco , Benedetta Pellacci

The purpose of this paper is to establish a critical point theorem, which is an infinite-dimensional generalization of the classical generalized Mountain Pass Theorem of P. H. Rabinowitz \cite[Theorem 5.3]{Ra}. As application, we obtain the…

Analysis of PDEs · Mathematics 2026-04-23 Ablanvi Songo , Fabrice Colin

Motivated by the analysis and geometry of metric-measure structures in infinite dimensions, we study the category of extended metric-topological spaces, along with many of its distinguished subcategories (such as the one of compact spaces).…

Category Theory · Mathematics 2026-01-13 Enrico Pasqualetto , Timo Schultz , Janne Taipalus

This work proposes to generalize certain results regarding some semilinear elliptic systems.

Classical Analysis and ODEs · Mathematics 2016-03-08 Dragos-Patru Covei

The principle of virtual work for dissipative systems is stated. Partially controlled systems are discussed and the concept of a generating families of forms is introduced. The notion of a critical point of a family of convex forms is…

Mathematical Physics · Physics 2007-05-23 Wlodzimierz Tulczyjew , Pawel Urbanski

In this paper we consider the existence of positive solutions for a singular elliptic problem involving an asymtotically linear nonlinearity and depending on one positive parameter. Using variational methods, together with comparison…

Analysis of PDEs · Mathematics 2020-11-18 Ricardo Lima Alves

This document presents an overview of the physics potential of a future electron-positron linear collider. It represents a common input from the CLIC and ILC communities.

We study a class of logarithmic Schrodinger equations with periodic potential which come from physically relevant situations and obtain the existence of infinitely many geometrically distinct solutions.

Analysis of PDEs · Mathematics 2016-12-13 Marco Squassina , Andrzej Szulkin

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