Results 21 to 30 of about 752 (91)

On some nonlinear Schrödinger equations in $\bbr^N$ [PDF]

open access: yesarXiv, 2021
In this paper, we introduce some new ideas to study Schrodinger equations in RN with power-type nonlinearities.
arxiv  

Multiple positive solutions for a class of Kirchhoff type equations with indefinite nonlinearities

open access: yesAdvances in Nonlinear Analysis, 2021
We study the following Kirchhoff type equation:
Che Guofeng, Wu Tsung-fang
doaj   +1 more source

A quasilinear problem with fast growing gradient

open access: yes, 2012
In this paper we consider the following Dirichlet problem for the $p$-Laplacian in the positive parameters $\lambda$ and $\beta$: [{{array} [c]{rcll}% -\Delta_{p}u & = & \lambda h(x,u)+\beta f(x,u,\nabla u) & \text{in}\Omega u & = & 0 & \text{on}\partial\
Bueno, Hamilton, Ercole, Grey
core   +1 more source

Existence and concentration of ground-states for fractional Choquard equation with indefinite potential

open access: yesAdvances in Nonlinear Analysis, 2022
This paper is concerned with existence and concentration properties of ground-state solutions to the following fractional Choquard equation with indefinite potential: (−Δ)su+V(x)u=∫RNA(εy)∣u(y)∣p∣x−y∣μdyA(εx)∣u(x)∣p−2u(x),x∈RN,{\left(-\Delta )}^{s}u+V ...
Zhang Wen, Yuan Shuai, Wen Lixi
doaj   +1 more source

Harnack's estimate for a mixed local-nonlocal doubly nonlinear parabolic equation [PDF]

open access: yesarXiv, 2022
We establish Harnack's estimates for positive weak solutions to a mixed local and nonlocal doubly nonlinear parabolic equation. All results presented in this paper are provided together with quantitative estimates.
arxiv  

Nonzero positive solutions of a multi-parameter elliptic system with functional BCs

open access: yes, 2017
We prove, by topological methods, new results on the existence of nonzero positive weak solutions for a class of multi-parameter second order elliptic systems subject to functional boundary conditions. The setting is fairly general and covers the case of
Infante, Gennaro
core   +1 more source

Study of periodic and nonnegative periodic solutions of nonlinear neutral functional differential equations via fixed points

open access: yesActa Universitatis Sapientiae: Mathematica, 2016
In this paper, we study the existence of periodic and non-negative periodic solutions of the nonlinear neutral differential equation ddtx(t)=−a (t) h (x (t))+ddtQ (t, x (t−τ (t)))+G (t, x(t), x (t−τ (t))).$${{\rm{d}} \over {{\rm{dt}}}}{\rm{x}}({\rm{t}}) =
Mesmouli Mouataz Billah   +2 more
doaj   +1 more source

Classification of solutions to $Δu = u^{-γ}$ in the half-space [PDF]

open access: yesarXiv, 2023
We provide a classification result for positive solutions to $\Delta u = u^{-\gamma}$ in the half space, under zero Dirichlet boundary condition.
arxiv  

(p,Q) systems with critical singular exponential nonlinearities in the Heisenberg group

open access: yesOpen Mathematics, 2020
The paper deals with the existence of solutions for (p,Q)(p,Q) coupled elliptic systems in the Heisenberg group, with critical exponential growth at infinity and singular behavior at the origin.
Pucci Patrizia, Temperini Letizia
doaj   +1 more source

Existence and asymptotical behavior of solutions for a quasilinear Choquard equation with singularity

open access: yesOpen Mathematics, 2021
In this study, we consider the following quasilinear Choquard equation with singularity −Δu+V(x)u−uΔu2+λ(Iα∗∣u∣p)∣u∣p−2u=K(x)u−γ,x∈RN,u>0,x∈RN,\left\{\begin{array}{ll}-\Delta u+V\left(x)u-u\Delta {u}^{2}+\lambda \left({I}_{\alpha }\ast | u{| }^{p})| u{| }
Shao Liuyang, Wang Yingmin
doaj   +1 more source

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