Results 21 to 30 of about 296 (72)

On the propagation of an optical wave in a photorefractive medium [PDF]

open access: yes, 2007
The aim of this paper is first to review the derivation of a model describing the propagation of an optical wave in a photorefractive medium and to present various mathematical results on this model: Cauchy problem, solitary ...
Abramowitz M.   +4 more
core   +3 more sources

Multiple solutions for a problem with resonance involving the p‐Laplacian

open access: yesAbstract and Applied Analysis, Volume 3, Issue 1-2, Page 191-201, 1998., 1998
In this paper we will investigate the existence of multiple solutions for the problem where Δpu = div(|∇u|p−2∇u) is the p‐Laplacian operator, Ω⫅ℝN is a bounded domain with smooth boundary, h and g are bounded functions, N ≥ 1 and 1 < p < ∞. Using the Mountain Pass Theorem and the Ekeland Variational Principle, we will show the existence of at least ...
C. O. Alves   +2 more
wiley   +1 more source

Gevrey regularizing effect of the Cauchy problem for non-cutoff homogeneous Kac's equation [PDF]

open access: yes, 2009
In this work, we consider a spatially homogeneous Kac's equation with a non cutoff cross section. We prove that the weak solution of the Cauchy problem is in the Gevrey class for positive time.
Lekrine, Nadia, Xu, Chao-Jiang
core   +3 more sources

Boundary value problems for the diffusion equation with piecewise continuous time delay

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 20, Issue 1, Page 187-195, 1997., 1996
A study is made of partial differential equations with piecewise constant arguments. Boundary value problems for three types of equations are discussed delayed; alternately of advanced and retarded type; and most importantly, an equation of neutral type (that is, including the derivative at different values of time t).
Joseph Wiener, Lokenath Debnath
wiley   +1 more source

Effect of Torso Non-Homogeneities in the quasi-static inverse problems arising in electrocardiology

open access: yesMoroccan Journal of Pure and Applied Analysis, 2019
In the present paper, an homogeneous and non-homogeneous inverse problem constrained by the stationary problem in electrocardiology representing the heart, lungs surfaces, and torso model is investigated.
Ainseba BedrEddine   +2 more
doaj   +1 more source

Inhomogeneous Boundary Value Problem for Hartree Type Equation

open access: yes, 2009
In this paper, we settle the problem for time-dependent Hartree equation with inhomogeneous boundary condition in a bounded Lipschitz domain in $\mathbb{R}^{N}$.
Adams R. A., Li Ma, Pei Cao
core   +1 more source

Eigenelements of a General Aggregation-Fragmentation Model [PDF]

open access: yes, 2009
We consider a linear integro-differential equation which arises to describe both aggregation-fragmentation processes and cell division. We prove the existence of a solution $(\lb,\U,\phi)$ to the related eigenproblem.
Adimy M.   +8 more
core   +9 more sources

Time discretization of nonlinear Cauchy problems applying to mixed hyperbolic‐parabolic equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 19, Issue 3, Page 481-494, 1996., 1995
In this paper we deal with the equation L(d2u/dt2) + B(du/dt) + Au∋f, where L and A are linear positive selfadjoint operators in a Hilbert space H and from a Hilbert space V ⊂ H to its dual space V′, respectively, and B is a maximal monotone operator from V to V′.
Pierluigi Colli, Angelo Favini
wiley   +1 more source

Remarks on the existence and decay of the nonlinear beam equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 2, Page 409-412, 1994., 1993
We will consider a class of nonlinear beam equation and we will prove the existence and decay weak ...
Jaime E. Mũnoz Rivera
wiley   +1 more source

Global well-posedness for the Gross-Pitaevskii equation with an angular momentum rotational term

open access: yes, 2008
In this paper, we establish the global well-posedness of the Cauchy problem for the Gross-Pitaevskii equation with an rotational angular momentum term in the space $\Real^2$.Comment: 10 ...
Avron   +16 more
core   +1 more source

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