Results 21 to 30 of about 160 (121)

Global Sobolev regular solution for Boussinesq system

open access: yesAdvances in Nonlinear Analysis, 2023
This article is concerned with the study of the initial value problem for the three-dimensional viscous Boussinesq system in the thin domain Ω≔R2×(0,R)\Omega := {{\mathbb{R}}}^{2}\times \left(0,R).
Zhao Xiaofeng, Li Weijia, Yan Weiping
doaj   +1 more source

Note for global existence of semilinear heat equation in weighted L∞ space. [PDF]

open access: yes, 2019
[Georgiev V.; Георгиев В.]The local and global existence of the Cauchy problem for semilinear heat equations with small data is studied in the weighted L^∞(R^n ) framework by a simple contraction argument.
Gueorguiev, Vladimir Simeonov   +5 more
core   +1 more source

The existence of positive solution for an elliptic problem with critical growth and logarithmic perturbation

open access: yesAdvanced Nonlinear Studies, 2023
We consider the existence and nonexistence of the positive solution for the following Brézis-Nirenberg problem with logarithmic perturbation: −Δu=∣u∣2∗−2u+λu+μulogu2x∈Ω,u=0x∈∂Ω,\left\{\phantom{\rule[-1.25em]{}{0ex}}\begin{array}{ll}-\Delta u={| u| }^{{2}^
Deng Yinbin   +3 more
doaj   +1 more source

Logistic damping effect in chemotaxis models with density-suppressed motility

open access: yesAdvances in Nonlinear Analysis, 2022
This paper is concerned with a parabolic-elliptic chemotaxis model with density-suppressed motility and general logistic source in an n-dimensional smooth bounded domain with Neumann boundary conditions.
Lyu Wenbin, Wang Zhi-An
doaj   +1 more source

Inverse Problem Analysis for the 2D Sixth-Order Boussinesq Equation Subject to Extra Conditions

open access: yesAdvances in Mathematical Physics
MSC2020 Classification : 35R30, 35D30 ...
M. J. Huntul   +2 more
doaj   +1 more source

Existence and Blowup for a Plate Equation With a Fractional Time Delay Term With Logarithmic Nonlinearity

open access: yesDiscrete Dynamics in Nature and Society, Volume 2026, Issue 1, 2026.
In this paper, we consider a plate equation with a fractional time delay term and logarithmic nonlinearity in a bounded domain. First, we establish the well posedness of solutions using the semigroup theory. Furthermore, we prove the blowup of solutions under suitable conditions.
Erkan Sancar   +3 more
wiley   +1 more source

New Lower Bounds on the Radius of Spatial Analyticity for the Third‐Order Nonlinear Schrödinger Equation

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we consider the initial value problem associated with the cubic nonlinear Schrödinger equation with third‐order dispersion ∂tu+iα∂x2u+β∂x3u+iγu2u=0,x∈ℝ,t∈ℝ,ux,0=u0x, where α, β and γ are real constants such that β, γ ≠ 0, u is a complex valued function and the initial data u0 is analytic on ℝ and has a uniform radius of analyticity σ0 in
Tegegne Getachew, Xiasheng Shi
wiley   +1 more source

Concentrations for nonlinear Schrödinger equations with magnetic potentials and constant electric potentials

open access: yesAdvanced Nonlinear Studies, 2022
This article studies point concentration phenomena of nonlinear Schrödinger equations with magnetic potentials and constant electric potentials. The existing results show that a common magnetic field has no effect on the locations of point concentrations,
Wang Liping, Zhao Chunyi
doaj   +1 more source

Stability Results for Higher Order Solutions of Damped Wave Equations With Generalized Hartree‐Type Nonlinearity in Rn

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we investigate the dynamics of higher‐order solutions for a class of damped wave equations posed in Rn and driven by a nonlocal cubic convolution source of Hartree type. The model incorporates a higher order Laplacian of order σ, spatially dependent density functions, and frictional damping mechanisms.
Khaled Zennir   +4 more
wiley   +1 more source

Triple Solutions for Nonlinear (μ1(·), μ2(·))—Laplacian–Schrödinger–Kirchhoff Type Equations

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
In this manuscript, we study a (μ1(·), μ2(·))—Laplacian–Schrödinger–Kirchhoff equation involving a continuous positive potential that satisfies del Pino–Felmer type conditions: K1∫ℝN11/μ1z∇ψμ1z dz+∫ℝN/μ1zVzψμ1z dz−Δμ1·ψ+Vzψμ1z−2ψ+K2∫ℝN11/μ2z∇ψμ2z dz+∫ℝN/μ2zVzψμ2z dz−Δμ2·ψ+Vzψμ2z−2ψ=ξ1θ1z,ψ+ξ2θ2z,ψ inℝN, where K1 and K2 are Kirchhoff functions, Vz is a ...
Ahmed AHMED   +3 more
wiley   +1 more source

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