关于集值映象方程的一类问题

本文用ｆｐ－同伦方法，在特殊的技巧和边界条件下，研究了有序的（Ｂ）空间中集值凝聚映象方程的正解等问题．     

关于集值映象的某些问题

本文用适当的不动点同伦方法,在某些边界条件的支持下,通过特定的变换,研究了一类集值映象方程的非零解与固有元等在非线性分析中有意义的问题;作为所得理论结果的某些应用,文中还研究了极大化问题与微分方程组的非零周期解等问题。     

关于多正解问题的某些研究

本文以ｆｐ 同伦方法为工具，借助于一些适当的变换，研究有序的（Ｂ）空间中的集值映象方程的多正解问题；在文中的有关工作中，还使用了集值映象的拟导数的某些性质．     

关于Hilbert空间中一类映象方程的某些问题

本文引入一种特殊的保核收缩，以ｆ_p－同伦方法为工具研究了Ｈｉｌｂｅｒｔ空间中一类映象方程的解和非零解等问题，还给出了所得结果的一个应用．     

非紧域上集值映象的重合点与不动点

在赋范线性空间的非空非紧凸集上建立了集值映象对的一个重合点定理,然后用这一定理改进了文献［１］中的集值映象内向集定理与外向集定理,并得到几个集值映象不动点定理．     

（B）空间中的凝聚映像方程

如所周知,有关(B)空间X中的映像方程 θ=T_1(x)-x (1)的研究,是有重要的理论与应用价值的.例如,在处理一些理论与实际问题的时候,常可把它们纳入有关(1)的解或(相应映像的)本征元等问题的框架之中. 考虑方程(1).文中考虑的映像T_1:C→X是个凝聚映像.又,C是X的子集.     

概率赋范空间中具增生映象的方程解的存在性

本文的目的是把增生映象的概念推广到概率赋范空间,并研究具增生映象的方程在概率赋范空间中解的存在性条件.     

集值映象的某些重合定理

Browder[1]已得到了Schauder不动点定理的加强形式.许多作者从不同方向推广了Browder的结果.最近H.M.Ko;K.K.Tan[2]在放松紧性条件下得到了Browder定理的改进,K.K.Tan[3]将Browder定理推广到了集值映象对的重合定理,在本文中我们得到了集值映象对的某些重合定理,它们分别改进和推广了[1,2,3]中主要结果.     

H—空间中单调型集值映象变分不等式解的存在性问题

该文研究了一类具广义单调型集值映象的变分不等式解的存在性问题，结果包含文献「１，８，９」中的相应结果为特例。     

关于非零解与固有元的若干问题

本文用适当的ｆｐ－同伦方法，构造若干特定泛函，在边界条件（ＭＳ，Ａ，ａ，Ｃ ）与（ＣＳ；Ａ，ａ）等的支持下，研究一类集要值映象方程的非零解，固有元等有关问题，发展了Ｓｍａｒｔ，Ｐｏｔｔｅｒ Ｂｒｏｗｄｅｒ等及作者的某些结果。     

一类含凹凸非线性项拟线性椭圆方程的多重解

本文研究了一类拟线性椭圆方程,其中非线性项f在无穷远处(p-1)-次线性增长,非线性项g在无穷远处超线性增长.利用三临界点定理,获得了该类方程多重解的存在性,结果推广了Kristaly等人最近的相关结果.     

A STUDY ON SOME PROBLEMS ON EXISTENCE OF SOLUTIONS FOR NONLINEAR FUNCTIONAL-INTEGRAL EQUATIONS

In this paper, we prove the existence of solutions of some nonlinear functional-integral equation by using a fixed point theorem which satisfy the Darbo condition. The results extend the corresponding ...     

THE EXISTENCE OF MULTIPLE SOLUTIONS OF p-LAPLACIAN ELLIPTIC EQUATION

1 IntroductionIn this paper we consider the following quasilinear elliptic problemwhere -- A. 'u = --div(l V ulp--' 7 u), A 2 0 is a real parametcr, 0 < m < p -- 1 < q < oc. flis a bounded domain in RN(N 2 3).During the last decade HLaplaJce equatiolls have e11jOyed a growing attention. After theinitial works of Poliozeav[1], and of Brezis and Nirenberg[2], there has been great number ofcontributious to the study of that kind of problem (1.1)A(see [3-161). Recently, equationiuvolving th…     

MULTIPLE POSITIVE SOLUTIONS OF BOUNDARY VALUE PROBLEMS FOR QUASILINEAR DIFFERENTIAL EQUATIONS

We consider the boundary value problem for the second order quasilinear differential equationwhere f is allowed to change sign, φ(v) = \v\p-2v, p > 1. Using a new fixed point theorem in double cones, we show the existence of at least two positive solutions of the boundary value problem.     

THE ACCELERATED SEARCH-EXTENSION METHOD FOR COMPUTING MULTIPLE SOLUTIONS OF SEMILINEAR PDEs

In this paper, we propose an accelerated search-extension method （ASEM） based on the interpolated coefficient finite element method, the search-extension method （SEM） and the two-grid method to obtain the multiple solutions for semilinear elliptic equations. This strategy is not only successfully implemented to obtain multiple solutions for a class of semilinear elliptic boundary value problems, but also reduces the expensive computation greatly. The numerical results in I-D and 2-D cases will show the efficiency of our approach.     

MULTIPLE POSITIVE SOLUTIONS FOR QUASILINEAR ELLIPTIC PROBLEMS INVOLVING CONCAVE-CONVEX NONLINEARITIES AND MULTIPLE HARDY-TYPE TERMS

In this paper, we deal with the existence and multiplicity of positive solutions for the quasilinear elliptic problem??pu?kX i=1 μi |u|p?2|x?ai|p u=|u|p*?2 u+λ|u|q?2 u, x∈?, where??RN (N ≥3) is a smoot...     

ON THE EXISTENCE OF POSITIVE ENTIRE SOLUTIONS FOR SINGULAR p-LAPLACE EQUATIONS

In this paper N-dimensional singular, p-Laplace equations of the following form are considered, where p ≥N, β > 0, and f : [0,∞)×(0,∞)×[0, ∞)→[0,∞) is a continuous function. Some sufficient conditions are obtained for the existence of infinitely many radially positive entire solutions of the equation which are asymptotic to positive constant multiples of |x|(p-N)/(p-1) for p > N or log|x| for N = p as |x|→∞.     

EXISTENCE OF MULTIPLE SOLUTIONS FOR NONLINEAR ELLIPTIC EQUATIONS WITH MIXED BOUNDARY CONDITIONS

1 IntroductionWe deal with the problem{ it:;,."--'"'::3of (11)where 9 C RN, N 2 3 is a bounded domain with smooth boundary 0fl, 0n = ro U r1, ro andYl have (N -- 1)-dinlensiollal Hausdorff nleasuret r E L'(r1), yt 2 0, V * 0 on r1, 7 denotesthe u11it outward normal and p = 2* = ee is the critical SoboleY exponent fOr the Sobolevembedding V(O) - H(O), V(fl) = {u E H'(fl) l u = 0 on ro}'The case ro and r1 have positive (N -- 1)-dimellsional Hausdoor measure aud p = 0on r1 in (1.1), has…     

共振长短波方程的孤波解

本文研究了共振长短波方程的孤波解.利用扩展映射法和符号计算,得到许多新的孤波解.这些孤波解能很好地模拟水波,辅助方程用更一般方程代替的扩展映射法能更有效找到这些孤波解.

Abstract：

In this article,soliton solutions of the long-short wave resonance equations are investigated.By the extended mapping method and symbolic computation,many new exact soliton solutions are obtained.These soliton solutions are fascinating in modeling water waves.The extended mapping method,with the auxiliary ordinary equations replaced by more general ones,is more effective to find these soliton solutions.