Results 51 to 60 of about 1,232 (95)

On an initial‐boundary value problem for the nonlinear Schrödinger equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2, Issue 3, Page 503-522, 1979., 1979
We study an initial‐boundary value problem for the nonlinear Schrödinger equation, a simple mathematical model for the interaction between electromagnetic waves and a plasma layer. We prove a global existence and uniqueness theorem and establish a Galerkin method for solving numerically the problem.
Herbert Gajewski
wiley   +1 more source

Global Schauder estimates for kinetic Kolmogorov-Fokker-Planck equations

open access: yesAdvanced Nonlinear Studies
We present global Schauder type estimates in all variables and unique solvability results in kinetic Hölder spaces for kinetic Kolmogorov-Fokker-Planck (KFP) equations.
Dong Hongjie, Yastrzhembskiy Timur
doaj   +1 more source

Solitons in gauge theories: Existence and dependence on the charge

open access: yesAdvances in Nonlinear Analysis, 2014
In this paper we review recent results on the existence of non-topological solitons in classical relativistic nonlinear field theories. We follow the Coleman approach, which is based on the existence of two conservation laws, energy and charge.
Bonanno Claudio
doaj   +1 more source

Imbedding inequalities with Lφ-norms for composite operators

open access: yesJournal of Inequalities and Applications, 2013
In this paper, we prove imbedding inequalities with Lφ-norms for the composition of the potential operator and homotopy operator applied to differential forms. We also establish the global imbedding inequality in Lφ-averaging domains.
Yuming Xing, S. Ding
semanticscholar   +1 more source

Gaussian estimates for fundamental solutions of second order parabolic systems with time-independent coefficients

open access: yes, 2007
Auscher, McIntosh and Tchamitchian studied the heat kernels of second order elliptic operators in divergence form with complex bounded measurable coefficients on $\mathbb{R}^n$.
Kim, Seick
core   +2 more sources

Rigidity results for some boundary quasilinear phase transitions

open access: yes, 2008
We consider a quasilinear equation given in the half-space, i.e. a so called boundary reaction problem. Our concerns are a geometric Poincar\'e inequality and, as a byproduct of this inequality, a result on the symmetry of low-dimensional bounded stable ...
Sire, Yannick, Valdinoci, Enrico
core   +2 more sources

An upper bound for the least energy of a sign-changing solution to a zero mass problem

open access: yesAdvanced Nonlinear Studies
We give an upper bound for the least possible energy of a sign-changing solution to the nonlinear scalar field equation −Δu=f(u),u∈D1,2(RN), $-{\Delta}u=f\left(u\right), u\in {D}^{1,2}\left({\mathrm{R}}^{N}\right),$ where N ≥ 5 and the nonlinearity f is
Clapp Mónica   +2 more
doaj   +1 more source

Multiplicity of normalized solutions for nonlinear Choquard equations

open access: yesAdvanced Nonlinear Studies
In this paper, we consider the following nonlinear Choquard equation with prescribed L 2-norm: −Δu+λu=Iα∗F(u)f(u) in RN,∫RN|u|2dx=a>0,u∈H1(RN), $\begin{cases}-{\Delta}u+\lambda u=\left({I}_{\alpha }\ast F\left(u\right)\right)f\left(u\right) \,\text{in}\,
Long Chun-Fei   +3 more
doaj   +1 more source

Homogenisation with error estimates of attractors for damped semi-linear anisotropic wave equations

open access: yesAdvances in Nonlinear Analysis, 2019
Homogenisation of global 𝓐ε and exponential 𝓜ε attractors for the damped semi-linear anisotropic wave equation ∂t2uε+y∂tuε−divaxε∇uε+f(uε)=g,$\begin{array}{} \displaystyle \partial_t ^2u^\varepsilon + y \partial_t u^\varepsilon-\operatorname{div} \left(a\
Cooper Shane, Savostianov Anton
doaj   +1 more source

The interior curvature bounds for a class of curvature quotient equations

open access: yesAdvanced Nonlinear Studies
For elliptic partial differential equations, the pure interior C 2 estimates and Pogorelov type estimates are important issues. In this paper, we study the interior estimates of Γk̃ $\tilde {{{\Gamma}}_{k}}$ -admissible solutions for curvature quotient ...
Jia Haohao
doaj   +1 more source

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