Results 21 to 30 of about 5,838 (166)

Study of properties of solutions for quasilinear parabolic systems

open access: yesMATEC Web of Conferences, 2016
In this paper, we concern with degenerate and quasilinear parabolic systems not in divergence form with null Dirichlet boundary conditions and positive initial conditions. The local existence and uniqueness of classical solution are proved.
Gao Yunzhu, Meng Qiu, Guo Yingjia
doaj   +1 more source

Willmore Obstacle Problems under Dirichlet Boundary Conditions

open access: yesANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 2023
We consider obstacle problems for the Willmore functional in the class of graphs of functions and surfaces of revolution with Dirichlet boundary conditions. We prove the existence of minimisers of the obstacle problems under the assumption that the Willmore energy with the unilateral constraint is below a universal bound.
Grunau, Hans-Christoph, Okabe, Shinya
openaire   +3 more sources

Wentzell boundary conditions in the context of Dirichlet forms

open access: yesAdvances in Differential Equations, 2003
For the formal elliptic expression \(L=\nabla a\nabla\) on \(\Omega\subset{\mathbb R}^d\) with Wentzell boundary condition \(-\alpha Au +n\cdot a\nabla u +\gamma u=0\) on \(\Sigma\subset\Omega\) and Dirichlet boundary condition on \(\Omega\backslash\Sigma\) (\(\alpha,\gamma\) are suitable functions, \(n\) is the outward normal), the authors prove that ...
Vogt, Hendrik, Voigt, Jürgen
openaire   +3 more sources

Nonlinear differential equations with perturbed Dirichlet integral boundary conditions

open access: yesBoundary Value Problems, 2021
This paper is devoted to prove the existence of positive solutions of a second order differential equation with a nonhomogeneous Dirichlet conditions given by a parameter dependence integral.
Alberto Cabada, Javier Iglesias
doaj   +1 more source

Existence and Global Exponential Stability of Equilibrium Solution to Reaction-Diffusion Recurrent Neural Networks on Time Scales

open access: yesDiscrete Dynamics in Nature and Society, 2010
The existence of equilibrium solutions to reaction-diffusion recurrent neural networks with Dirichlet boundary conditions on time scales is proved by the topological degree theory and M-matrix method.
Kaihong Zhao, Yongkun Li
doaj   +1 more source

Numerical Reconstruction of the Source in Dynamical Boundary Condition of Laplace’s Equation

open access: yesAxioms
In this work, we consider Cauchy-type problems for Laplace’s equation with a dynamical boundary condition on a part of the domain boundary. We construct a discrete-in-time, meshless method for solving two inverse problems for recovering the space–time ...
Miglena N. Koleva, Lubin G. Vulkov
doaj   +1 more source

The existence of positive solutions for an elliptic boundary value problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
By using the mountain pass lemma, we study the existence of positive solutions for the equation −Δu(x)=λ(u|u|+u)(x) for x∈Ω together with Dirichlet boundary conditions and show that for every ...
G. A. Afrouzi
doaj   +1 more source

The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains

open access: yesAdvances in Mathematical Physics, 2018
We propose a new method for constructing an approximate solution of the two-dimensional Laplace equation in an arbitrary doubly connected domain with smooth boundaries for Dirichlet boundary conditions.
Atallah El-shenawy, Elena A. Shirokova
doaj   +1 more source

Fourth order elliptic system with dirichlet boundary condition [PDF]

open access: yesJournal of Inequalities and Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Choi Q-Heung, Jung Tacksun
openaire   +2 more sources

Positive solutions of nonlinear fractional boundary value problems with Dirichlet boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we study the existence and multiplicity of positive solutions of a class of nonlinear fractional boundary value problems with  Dirichlet boundary conditions. By applying the fixed point theory on cones we establish a series of criteria for
Qingkai Kong, Min Wang
doaj   +1 more source

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