Results 61 to 70 of about 206 (158)

A General Approach to Stability in Free Boundary Problems [PDF]

open access: yes, 2000
Every solution of a linear elliptic equation on a bounded domain may be considered as an equilibrium of a free boundary problem. The free boundary problem consists of the corresponding parabolic equation on a variable unknown domain with free boundary ...
Alessandra Lunardi   +10 more
core   +1 more source

Hopf's lemma, asymptotic radial symmetry, and monotonicity of solutions to the logarithmic Laplacian parabolic system

open access: yesAdvances in Nonlinear Analysis
In this article, we extend the asymptotic method of moving planes to the following logarithmic Laplacian parabolic system: ∂z∂t(η,t)+(−△)ℒz(η,t)=f(t,v(η,t)),(η,t)∈B1(0)×[0,∞),∂v∂t(η,t)+(−△)ℒv(η,t)=g(t,z(η,t)),(η,t)∈B1(0)×[0,∞),z(η,t)=0,v(η,t)=0,(η,t)∈B1c(
Wang Guotao, Wang Jing
doaj   +1 more source

A boundary control problem for the pure Cahn–Hilliard equation with dynamic boundary conditions

open access: yesAdvances in Nonlinear Analysis, 2015
A boundary control problem for the pure Cahn–Hilliard equations with possibly singular potentials and dynamic boundary conditions is studied and first-order necessary conditions for optimality are proved.
Colli Pierluigi   +2 more
doaj   +1 more source

Global existence and boundedness in a two-species chemotaxis system with nonlinear diffusion

open access: yesOpen Mathematics, 2021
This paper is concerned with a chemotaxis system ut=Δum−∇⋅(χ1(w)u∇w)+μ1u(1−u−a1v),x∈Ω,t>0,vt=Δvn−∇⋅(χ2(w)v∇w)+μ2v(1−a2u−v),x∈Ω,t>0,wt=Δw−(αu+βv)w,x∈Ω,t>0,\left\{\begin{array}{ll}{u}_{t}=\Delta {u}^{m}-\nabla \cdot \left({\chi }_{1}\left(w)u\nabla w)+{\mu
Huang Ting, Hou Zhibo, Han Yongjie
doaj   +1 more source

Blow-up analysis for parabolic equations and systems via an auxiliary functional approach

open access: yesAdvances in Nonlinear Analysis
This paper considers the finite-time blow-up of solutions to semilinear parabolic equations and systems. Using a direct functional method, we first study single equations with source terms f(u) = u p and f(u) = u p + u q.
Chen Shaohua, Lawless Marcus, Lian Wei
doaj   +1 more source

Parabolic inequalities in Orlicz spaces with data in L1

open access: yesOpen Mathematics, 2021
In this paper, we provide existence and uniqueness of entropy solutions to a general nonlinear parabolic problem on a general convex set with merely integrable data and in the setting of Orlicz spaces.
Alaoui Mohammed Kbiri
doaj   +1 more source

Interpolation inequalities for weak solutions of nonlinear parabolic systems [PDF]

open access: yes, 2011
The authors investigate differentiability of the solutions of nonlinear parabolic systems of order 2 m in divergence form of the following type ∑ | α | ≤ m ( - 1 ) | α | D α a α X , D u +
Giuseppe Floridia   +8 more
core   +1 more source

The quasilinear parabolic kirchhoff equation

open access: yesOpen Mathematics, 2017
In this paper the existence of solution of a quasilinear generalized Kirchhoff equation with initial – boundary conditions of Dirichlet type will be studied using the Leray – Schauder principle.
Dawidowski Łukasz
doaj   +1 more source

Generalized and numerical solution for a quasilinear parabolic equation with nonlocal conditions [PDF]

open access: yes, 2015
In this paper we study the one dimensional mixed problem with non- local boundary conditions, for the quasilinear parabolic equation. We prove an existence, uniqueness of the weak generalized solution and also continuous depen- dence upon the data of the
KANCA, Fatma, BAGLAN, Irem
core  

Invariant Regions and Global Existence of Uniqueness Weak Solutions for Tridiagonal Reaction-Diffusion Systems [PDF]

open access: yes
In this paper we study the existence of uniqueness global weak solutions for m × m reaction-diffusion systems for which two main properties hold: the positivity of the weak solutions and the total mass of the components are preserved with time. Moreover,
BARROUK, Nabila   +2 more
core   +1 more source

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