Results 91 to 100 of about 2,592,777 (103)

Characterization of the Palais–Smale sequences for the conformal Dirac–Einstein problem and applications

open access: yes, 2019
In this paper we study the Palais–Smale sequences of the conformal Dirac–Einstein problem. After we characterize the bubbling phenomena, we prove an Aubin type result leading to the existence of a positive solution.
Martino, Vittorio, Maalaoui, Ali
core   +1 more source

Existence of solutions for p-Kirchhoff type problems with critical exponent

open access: yesElectronic Journal of Differential Equations, 2011
We study the existence of solutions for the p-Kirchhoff type problem involving the critical Sobolev exponent, $$displaylines{ -Big[gBig(int_Omega|abla u|^pdxBig)Big]Delta_pu =lambda f(x,u)+|u|^{p^star-2}uquadext{in }Omega,cr u=0quadext{on ...
Ahmed Hamydy   +2 more
doaj  

Infinitely Many Solutions for Schrödinger–Poisson Systems and Schrödinger–Kirchhoff Equations

open access: yesMathematics
By applying Clark’s theorem as altered by Liu and Wang and the truncation method, we obtain a sequence of solutions for a Schrödinger–Poisson system −Δu+V(x)u+ϕu=f(u)inR3,−Δϕ=u2inR3 with negative energy.
Shibo Liu
doaj   +1 more source

Palais-Smale sequences for the prescribed Ricci curvature functional

open access: yes, 2023
We obtain a complete description of divergent Palais-Smale sequences for the prescribed Ricci curvature functional on compact homogeneous spaces. As an application, we prove the existence of saddle points on generalized Wallach spaces and several types ...
Ziller, Wolfgang, Pulemotov, Artem
core  

A Palais-Smale approach to Sobolev subcritical operators

open access: yes, 2002
In this article, we use Palais-Smale approaches to describe the achieved and nonachieved domains. We characterizes the achieved domain by the existence of a ground state solution for the energy functional $J$ in $\Omega$
Lin, Huei-li   +2 more
core  

A Linear Perturbed Palais-Smale Condition for Lower Semicontinuous Functions on Banach Spaces [PDF]

open access: yes, 2007
本文首先回顾了变分原理,最优化,扰动优化,扰动强优化和P-S条件发展的历史过程,从而自然引入了线性扰动P-S条件的概念。接着对本文所要用到的基本概念作了一个简单的介绍,最后通过强暴露点,强暴露泛函和非凸函数凸化的方法给出了本文主要定理的证明。 主要结果如下:1.举例说明了线性扰动P-S条件严格弱于P-S条件;2.给出了定义在具有RNP的Banach空间上有下界的下半连续函数的线性扰动P-S条件成立的特征条件。In this paper, we discuss linear perturbed ...
左麦芳
core  

A deformation theorem in the noncompact nonsmooth setting and its applications

open access: yesElectronic Journal of Differential Equations, 2001
We build a deformation for a continuous functional defined on a Banach space and invariant with respect to an isometric action of a noncompact group. Under these assumptions the Palais-Smale condition does not hold.
Gianni Arioli
doaj  

A PALAIS–SMALE APPROACH TO SOBOLEV SUBCRITICAL OPERATORS

open access: yes, 2010
[[abstract]]In this article, we use Palais–Smale approaches to describe the achieved and nonachieved domains. We characterizes the achieved domain by the existence of a ground state solution for the energy functional J in.[[fileno]]2010234010005 ...
Huei-li Lin;Hwai-chiuan Wang;Tsung-fang Wu
core  

Existence and uniqueness of a positive solution for a non homogeneous problem of fourth order with weights

open access: yesElectronic Journal of Differential Equations, 2006
In this work we study the existence of a positive solutions to the non homogeneous equation $$ Delta( |Delta u|^{p-2} Delta u) = m |u|^{q-2}u $$ with Navier boundary conditions, where $1 less than ,q less than p_2^*$ and $min L^infty(Omega)setminus {0}$,
Mohamed Talbi, Najib Tsouli
doaj  

Existence d’une branche de bifurcation d’une classe d’opérateurs potentiels

open access: yes, 2019
Dans ce mémoire, nous avons étudié les points de bifurcations dans la valeur propre principale d’une classe d’opérateur de gradient possédé la condition de palais-smale. L'existence de la branche de bifurcation s’appuit sur la condition Palais Smale.
LOUIFI, Marwa
core  

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