A REMARK ON DUALITY FOR THE SUM OF CONVEX FUNCTIONS IN GENERAL BANACH SPACES

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔＥｂｅａｒｅａｌＢａｎａｃｈｓｐａｃｅ，ｎｏｔｎｅｃｅｓａｒｉｌｙｒｅｆｌｅｘｉｖｅ．ＬｅｔΦ，Ψ：Ｅ→］－∞，∞］ｂｅｔｗｏｌｏｗｅｒｓｅｍｉｃｏｎｔｉｎｕｏｕｓｃｏｎｖｅｘｆｕｎｃｔｉｏｎｓ．Ｗｅｄｅｎｏｔｅ...     

ON THE EXISTENCE OF FIXED POINTS FOR LIPSCHITZIAN SEMIGROUPS IN BANACH SPACES

61. Introduction and PreliminariesLet C be a nonempty subset Of a Banal spare X. Then a mapping T: C -- C is saidto be a LiPSdrizian maPPing if, for ear integer n 2 1, there eallts a constant km > 0' such that Ilaal ~ chill S k.llx ~ all for all ale E C. A Lipschitzian mapping T is saidto be ~ k-LiPSdszian if km = k for all n 2 1, nonerpansive if km = 1 for alln 2 1, eleCtively. Moreover, a maPPing T: C - C is called asymptotically regularll'191if Asllgu 'z ~ chill = 0 for all 2 E…     

有序Banach空间中常微分方程正周期解的存在性

讨论了有序Banach空间E中的非线性常微分方程:u′(t)+Mu(t)=f(t,u(t)),(?)t∈R正ω-周期解的存在性,其中f:R×P→P连续,P为E中的正元锥.通过新的非紧性测度的估计技巧与凝聚映射的不动点指数理论获得了该问题正ω-周期解的存在性结果.     

凸函数的支撑凸集及其集映射

本文研究了线性空间中凸函数的支撑泛函存在性以及支撑泛函的数值域,利用子空间中支撑泛函延拓的方法,构造出在线性空间任意点的支撑泛函,确定在同一支撑点上支撑泛函的数值域,从而得到支撑泛函具有唯一性的充分必要条件,最后对支撑凸集到支撑泛函集的集映射进行讨论.     

Banach空间上一类由算子导出的局部凸拓扑

本文我们研究了由半范簇｛ＰＴ｜Ｔ∈ψ（Ｅ，Ｅ１）｝在Ｅ上导出的局部凸拓扑σＥ（Ｅ１），其中ＰＴ（ｘ）＝Ｔｘ的范数，ｘ∈Ｅ。首先我们给出了拓扑σＥ（Ｅ１）＝ω和σＥ（Ｅ１）＝Ｅ上的范数的等价条件，接着讨论了在σＥ（Ｅ１）下的紧性与完备性，最后利用空间稠密特征和关于无穷基数幂等的Ｈｅｓｓｅｎｂｅｒｇ定理进一步研究了σＥ（Ｅ１）与Ｅ上的范数的关系，证明了当Ｅ的稠密特征足够大时在ω和Ｅ上的范数间有无穷多个     

THE EXTENSION OPERATOR IN BANACH SPACES FOR LOCALLY BIHOLOMORPHIC MAPPINGS

In this article, the generalized Roper-Suffridge extension operator in Banach spaces for locally biholomorphic mappings is introduced. It is proved that this operator preserves the starlikeness on some domains in Banach spaces but does not preserves convexity for some cases. Moreover, the growth theorem, covering theorem, and the radius of starlikeness are discussed. Some results of Roper and Suffridge, Gong and Liu, Graham et al in C^n are extended to Hilbert spaces or Banach spaces.     

THE APPROXIMATION PROBLEM ON THE CLOSED CONVEX CONE AND ITS NUMERICAL SOLUTION

In this paper, we study the approximation problem on the closed convexcone, and prove that there exists a unique solution of the approximation problem, thengive the algorithm to compute the unique solution.     

DIFFERENTIABILITY OF CONVEX FUNCTIONS ON SUBLINEAR TOPOLOGICAL SPACES AND VARIATIONAL PRINCIPLES IN LOCALLY CONVEX SPACES

This paper presents a type of variational principles for real valued w lower semicon-tinuous functions on certain subsets in duals of locally convex spaces, and resolve a problem concerning differentiability of convex functions on general Banach spaces. They are done through discussing differentiability of convex functions on nonlinear topological spaces and convexification of nonconvex functions on topological linear spaces.     

Banach 空间中奇异积分-微分方程边值问题多解的存在性

通过建立一个特殊的锥,运用锥拉伸与锥压缩不动点定理,获得了Banach空间中一类非线性混合型奇异积分-微分方程边值问题多解的存在性．     

ON THE PRODUCT OF GATEAUX DIFFERENTIABILITY LOCALLY CONVEX SPACES

A locally convex space is said to be a Gateaux differentiability space (GDS)provided every continuous convex function defined on a nonempty convex open subset D of the space is densely Gateaux differentiable in D.This paper shows that the product of a GDS and a family of separable Frechet spaces is a GDS,and that the product of a GDS and an arbitrary locally convex space endowed with the weak topology is a GDS.     

凸域的外平行集的包含测度

本文研究了凸域内定长线段的包含测度问题,利用广义支持函数和限弦函数,得到了一类特殊凸域的包含测度.     

凸域内两点间的平均距离

本文研究了凸域内两点间的平均距离公式,利用广义支持函数的方法分别求出了圆、矩形、椭圆域内两点间的平均距离,并给出了具体的求解过程.     

Banach空间高阶周期边值问题正解的存在性

本文研究了Banach空间E中的高阶周期边值问题正解的存在性.利用非紧性测度的估计技巧与凝聚映射的不动点指数理论,获得了该问题正解的存在性结果,推广了某些已有的相应结果.     

有序Banach空间中非线性二阶周期边值问题的正解

讨论了有序Banach空间E中的非线性二阶周期边值问题-u″(t)+bu′(t)+cu(t)=f(t,u(t)),0≤t ≤ ω,u(0)=u(ω),u′(0)=u′(ω)正解的存在性,其中b,c∈R且c＞0,f:[0,ω]×P→P连续,P为E中的正元锥.本文通过新的非紧性测度的估计技巧与凝聚映射的不动点指数理论,获得了该问题正解的存在性结果.     

与平面凸集几何量有关的不等式(英文)

本文研究了平面凸集几何量之间的关系.通过定义新几何量:平面凸集的最大内接正三角形T和最大内接正方形S,分别获得了T(S)的边长、凸集的直径和面积之间的关系式.     

Banach空间中非线性脉冲Volterra型积分方程的可解性

本文利用“强极小锥”的概念,获得了Ｂａｎａｃｈ空间中非线性脉冲Ｖｏｌｔｅｒｒａ型积分方程整体解的存在性定理,改进了现有文献中的某些结果．     

EXTREMAL SOLUTIONS OF TERMINAL VALUE PROBLEMS FOR NONLINEAR IMPULSIVE INTEGRO-DIFFERENTIAL EQUATIONS IN BANACH SPACES

§１　ＩｎｔｒｏｄｕｃｔｉｏｎａｎｄＰｒｅｌｉｍｉｎａｒｉｅｓＡｓｅａｒｌｙａｓｉｎ１９８１,ＡｆｔａｂｉｚａｄｅｈａｎｄＬａｋｓｈｍｉｋａｎｔｈａｍ［１］ｂｅｇａｎｔｏｉｎｖｅｓｔｉｇａｔｅｔｅｒｍｉｎａｌｖａｌｕｅｐｒｏｂｌｅｍｓ（ＴＶＰｓ,ｉｎｓｈｏｒｔ）ｆｏｒｔｈｅｆｉｒｓｔｏｒｄｅｒｏｒｄｉｎａｒｙｄｉｆｆｅｒｅｎｔｉａｌｅｑｕａｔｉｏｎｓ．Ｈｏｗｅｖ－ｅｒ,ｔｈｅｒｅｓｅａｒｃｈｉｎＴＶＰｓｆｏｒｉｍｐｕｌｓｉｖｅｄｉｆｆｅｒｅｎｔｉａｌｅｑｕａｔｉｏｎｓｈａｓｍａｄｅｌｉｔｔｌｅｐ…     

有序向量空间中的凸规划成立鞍点准则的充要条件

§1.引言设 X,Y,Z 是实向量空间,D 是经 X 中凸集,Z 是有序向量空间,即在 Z 中存在自反、传递及反对称的二元关系,使在 Z 中,     

EXISTENCE OF SOLUTIONS FOR MIXED MONOTONE IMPULSIVE VOLTERRA INTEGRAL EQUATIONS IN BANACH SPACES

1IntroductionThetheoryofimpulsivedifferentialequationshasbeenemergingasanimportantareaofinvestigationsinrecentyears(see[1]).Usually,differentialequationandintegralequationinBanachspacesareconsideredonlyonafiniteintervalwithafinitenumberofmomentsofimpulseeffect(see,forexample,[2,3]).InthispapertwestudytheealltenceOfsolutionsformisedmonotoneimpulsiveVolterraintegralequationsontheinfiniteintervalR withaninfinitenumberofmomentsofimpulseeffectinBanachspaces.Byusingtheabedmonotoneiterativetechniqu…     

一般化凸空间上的变分不等式解的存在性问题

在本文,我们首先给出了KKM型定理和择一定理,然后根据上述结果讨论了一 般化凸空间上变分不等式解的存在性问题.