一类含权Rellich不等式

本文证明了一类含权Rellich不等式,其中的常数是最佳的.     

Non-existence Results for Quasilinear Elliptic Equations in Unbounded Domains

In the middle of 1980s,Ni＆Serrin,Grads,Ni ＆Nirenberg,established a generalized iueqnality for the sphelrical symmetry Solutions of quasilinear elliptic equations diV[A(|Du|)] ,f(u)=0,χ∈~n (1) By using this inequality,the results that do not exist spherical symmetry solution can be Proved.In order to study the non-existence of the nonspherical symmetry Solutions,We must establish the Pohozaev' ideutity or inequality for general nonspherical symmetry SOlutions for the most general quasilinear Euler equations     

泛函∫_ΩF(x,u,Du)dx的非平凡临界点的讨论

本文研究了泛函非平凡临界点的存在性.本文的结论的条件要比文献[1]—[4]的弱,如对泛函,条件u·g(x,u)-pG(x,u)≥-c可以取代条件u·g(x,u)-μG(x,u)≥-c,μ>p。     

R~4中含位势的非线性双调和方程

建立了H02(Ω)(0∈ΩR4)中的Hardy不等式,利用临界点理论得到了含位势的非线性双调和方程非平凡解的存在性.     

p阶平均曲率算子Dirichlet问题的无穷多个解

§ 1　 IntroductionSince the Mountain Pass Theorem came out,the existence of nontrivial solutions,pos-sibly multiple,ofnonlinear elliptic equations has been extensively studied.In this paper,weconsider the following Dirichlet problem for p-(generalized) mean curvature operator:-div((1 +| u|2 ) p- 22 u) =f(x,u) ,　 x∈Ω,u∈ W1 ,p0 (Ω ) , (1 .1 )whereΩ is a bounded domain in Rn(n>p>1 ) with smooth boundary Ω.First let us recall the following Dirichletproblem for p-Laplacian:-Δpu≡ -div…     

退化变分问题和退化椭圆型方程的正解

本文讨论由未知函数u=0引起的下列退化变分问题正解的存在性: 证明此正解满足Harnack不等式性质,进一步讨论带自然增长退化椭圆型Euler方程具下列非齐次Dirichlet问题解的存在性:     

调和映射中的弱单调不等式和部分正则性

对弱调和映射引入局部弱单调不等式的概念 ,并得到了这类弱调和映射的一些结果 ,如局部弱单调不等式几乎等价于ε-正则性等 .     

WEIGHTED POINCARE INEQUALITIES, ON UNBOUNDED DOMAINS AND NONLINEAR ELLIPTIC BOUNDARY VALUE, PROBLEMS

This paper is concerned with establishing Poincare type inequalities for integrals of functions and their derivatives over unbounded domains.It is well know that the Poincare inequality     

含参数拟线性薛定谔方程的特征值问题

本文考虑如下拟线性薛定谔方程:-Δu+(κu)/2△u²=λ|u|^p-2u,x∈Ω,这里u∈H(Ω),20,N≥3且Ω是有界区域.结合变分方法和摄动讨论,作者证明了存在常数κ₀> 0,使得对任何的κ∈(0,κ₀),这类特征值问题有解(λ,u).特别地,如果限制|u|_p^p=α,作者发现对任何的κ> 0,存在α₀> 0,使得在α <α₀时,该特征值问题的解总是存在的.此外,作者采用不同于Morse迭代的方法构造出了常数κ₀和α₀的精确表达式.     

三维静态Landau-Lifshitz方程组多重正则解的存在性

对三维Landau-Lifshitz方程u×(-△u+λ(u,n)n)=o,|u|=1,x∈ΩR3的Dirichlet常边值问题,证明了当λ＞λ1时,存在两个正则解,当λ＞max(λ1,λ*)时,存在三个正则解,除常数外,还有一个是非轴对称极小解,另一个是轴对称解,其中λ1是-△算子齐次Dirichlet问题的第一特征值,