Results 71 to 80 of about 149,012 (219)

Global Optimal Regularity for the Parabolic Polyharmonic Equations

open access: yesBoundary Value Problems, 2010
We show the global regularity estimates for the following parabolic polyharmonic equation in under proper conditions. Moreover, it will be verified that these conditions are necessary for the simplest heat equation in .
Yao Fengping
doaj  

The well-posedness of an anisotropic parabolic equation based on the partial boundary value condition

open access: yesBoundary Value Problems, 2017
Consider the anisotropic parabolic equation with the variable exponent u t = ∑ i = 1 N ( a i ( x ) | u x i | p i ( x ) − 2 u x i ) x i , $$ {u_{t}}=\sum_{i=1}^{N} \bigl(a_{i}(x)|u_{x_{i}}|^{p_{i}(x)-2}u_{x_{i}} \bigr)_{x _{i}}, $$ with a i ( x ) $a_{i}(x)
Huashui Zhan
doaj   +1 more source

Numerical methods for sixth-order boundary-value problems

open access: yes, 1990
A family of numerical methods is developed for the solution of special nonlinear sixth-order boundary-value problems. Methods with second-, fourth-, sixth- and eighth-order convergence are contained in the family.
Twizell, E H, Boutayeb, A
core  

Numerical methods for boundary value problems on random domains [PDF]

open access: yes, 2014
In this thesis, we consider the numerical solution of elliptic boundary value problems on random domains. The underlying domain is modelled via a random vector field which is given by its mean and its covariance.
Peters, Michael
core   +1 more source

Extremal Solutions of Periodic Boundary Value Problems for First-Order Impulsive Integrodifferential Equations of Mixed-Type on Time Scales

open access: yesBoundary Value Problems, 2007
We consider the existence of minimal and maximal solutions of periodic boundary value problems for first-order impulsive integrodifferential equations of mixed-type on time scales by establishing a comparison result and using the monotone iterative ...
Li Yongkun, Zhang Hongtao
doaj  

Localized boundary-domain singular integral equations based on harmonic parametrix for divergence-form elliptic PDEs with variable matrix coefficients

open access: yes, 2013
This is the post-print version of the Article. The official publised version can be accessed from the links below. Copyright @ 2013 Springer BaselEmploying the localized integral potentials associated with the Laplace operator, the Dirichlet, Neumann and
Mikhailov, SE   +2 more
core   +1 more source

A general decay result for a semilinear heat equation with past and finite history memories

open access: yesBoundary Value Problems, 2019
In this paper, we consider the initial-boundary value problem of the following semilinear heat equation with past and finite history memories: ut−Δu+∫0tg1(t−s)div(a1(x)∇u(s))ds+∫0+∞g2(s)div(a2(x)∇u(t−s))ds+f(u)=0,(x,t)∈Ω×[0,+∞), $$\begin{aligned} &u_{t}-\
Rui Yang, Zhong Bo Fang
doaj   +1 more source

Spreadsheet Implementations for Solving Boundary-Value Problems in Electromagnetics [PDF]

open access: yes, 2010
Electromagnetics is arguably one of the most challenging courses in any electrical engineering curriculum. A solid foundation in vector calculus and a good intuition based on physical grounds are the normal requirements for a student to successfully ...
Sastry P Kuruganty, Mark A Lau
core  

Existence of stable standing waves for the Schrödinger–Choquard equation

open access: yesBoundary Value Problems, 2018
In this paper, by variational methods and the profile decomposition of bounded sequences in H1 $H^{1}$ we study the existence of stable standing waves for the Schrödinger–Choquard equation with an L2 $L^{2}$-critical nonlinearity. Our results extend some
Kun Liu, Cunqin Shi
doaj   +1 more source

On Boundary Value Problems for the Hyperbolic Case

open access: yesJournal of Complexity, 1994
The situation for the solvability and the uniqueness of the Dirichlet problem for the wave equation depends on the form of the domain and the boundary values. This dependence is not of a natural kind dealing with smoothness properties of functions describing the boundary and the data.
openaire   +1 more source

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