Results 41 to 50 of about 317 (178)

Dispersive Estimates of Solutions to the Wave Equation with a Potential in Dimensions Two and Three [PDF]

open access: yes, 2005
2000 Mathematics Subject Classification: 35L15, 35B40, 47F05.We prove dispersive estimates for solutions to the wave equation with a real-valued potential ...
Cardoso, Fernando   +2 more
core  

Stabilization of a population dynamic model with delay term by a boundary dynamical control

open access: yes, 2023
We consider a population dynamic system with delay term and nonlocal boundary condition. The semigroup theory combined with the Banach fixed point theorem lead to the well posedness of the problem.
TRAORE, Amidou, TRAORE, Oumar
core  

Algebraic Lower Bounds on the Spatial Analyticity Radius for Higher Order Nonlinear Schrödinger Equations

open access: yesJournal of Applied Mathematics, Volume 2025, Issue 1, 2025.
We investigate the initial value problem associated to the higher order nonlinear Schrödinger equation i∂tu+−1j+1∂x2ju=u2ju x,t≠0∈ℝ,ux,0=u0x, where j ≥ 2 is any integer, u is a complex valued function, and the initial data u0 is real analytic on ℝ and has a uniform radius of spatial analyticity σ0 in the space variable.
Tegegne Getachew   +3 more
wiley   +1 more source

Feedback stabilization of semilinear heat equations

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 12, Page 697-714, 2003., 2003
This paper is concerned with the internal and boundary stabilization of the steady‐state solutions to quasilinear heat equations via internal linear feedback controllers provided by an LQ control problem associated with the linearized equation.
V. Barbu, G. Wang
wiley   +1 more source

Anomalous pseudo-parabolic Kirchhoff-type dynamical model

open access: yesAdvances in Nonlinear Analysis, 2021
In this paper, we study an anomalous pseudo-parabolic Kirchhoff-type dynamical model aiming to reveal the control problem of the initial data on the dynamical behavior of the solution in dynamic control system. Firstly, the local existence of solution is
Dai Xiaoqiang   +3 more
doaj   +1 more source

On the Existence and Behavior of Solution for p(x)‐Biharmonic‐Type Hyperbolic Equation With Nonlinear Damping and Variable Exponent Source

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
A fourth‐order p(x)‐biharmonic‐type hyperbolic equation with variable‐exponent nonlinearities is considered. The global existence of solutions has been obtained by potential well theory and the continuous principle. Qualitative properties related to the stability of the solution of this equation are obtained using the method of the well‐known Komornik ...
Billel Gheraibia   +4 more
wiley   +1 more source

Existence and nonexistence of entire solutions to the logistic differential equation

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 17, Page 995-1003, 2003., 2003
We consider the one‐dimensional logistic problem (rαA(|u′|)u′) ′=rαp(r)f(u) on (0, ∞), u(0) > 0, u′(0) = 0, where α is a positive constant and A is a continuous function such that the mapping tA(|t|) is increasing on (0, ∞). The framework includes the case where f and p are continuous and positive on (0, ∞), f(0) = 0, and f is nondecreasing.
Marius Ghergu, Vicenţiu Rădulescu
wiley   +1 more source

Refined second boundary behavior of the unique strictly convex solution to a singular Monge-Ampère equation

open access: yesAdvances in Nonlinear Analysis, 2021
In this paper, we establish the second boundary behavior of the unique strictly convex solution to a singular Dirichlet problem for the Monge-Ampère ...
Wan Haitao, Shi Yongxiu, Liu Wei
doaj   +1 more source

Global Solutions and Asymptotic Study to a 3D‐Lagrangian Boussinesq System

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
We prove that the Lagrangian‐averaged​ 3D periodic Boussinesq system has a global in time weak solution that depends continuously on time. Also, we establish that a unique strong global in time solution exists. Moreover, we show that the system has a compact global attractor which is connected.
Ridha Selmi   +2 more
wiley   +1 more source

Generalized Cahn‐Hilliard equations based on a microforce balance

open access: yesJournal of Applied Mathematics, Volume 2003, Issue 4, Page 165-185, 2003., 2003
We present some models of Cahn‐Hilliard equations based on a microforce balance proposed by M. Gurtin. We then study the existence and uniqueness of solutions.
Alain Miranville
wiley   +1 more source

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