B值渐近鞅的强弱大数定律

本文用Ｂ值渐近鞅的Ｄｏｏｂ分解，研究了取值于具有ＲＮＰ且对偶可分的Ｂａｎａｃｈ空间Ｂ值渐近鞅的强弱大数定律．给出了一系列结果及其证明     

（S↑-）模糊积分意义下的可积函数空间的若干性质

给出(S↑-)模糊积分的定义，讨论其基本性质。当模糊测度μ满足(T)条件(见命题3.3)时，可以得到，(S↑-)模糊积分的p次(S↑-)模糊可积函数空间Lp(p≥1)是实数域R上的线性空间，且当μ次可加时，Lp(p≥1)在相应的距离ρp(定义4．3)下，(Lp，ρp)构成一完备的距离空间。     

(N)模糊积分

本文定义了一种新的模糊积分,它较[2]所定义的模糊积分与Lebesgue积分有更多的相似之处。特别是作为人类思维过程的模拟,较[2]更切近于实际。文中研究了这种积分的性质,证明了类似Lebesgue积分中Levi定理、Fatou定理等关于积分序列的收敛性定理,给出了把一般的模糊测度空间上的(N)模糊积分转化为R¹上以Lebesgue测度为模糊测度的(N)模糊积分的公式。§4中引进了一类特殊的所谓λ次可加模糊测度空间,给出了这种测度空间上收敛性的Егоров定理和Riesz定理并得到了该空间上的(N)模糊积分在积分号下取极限的一些充分条件。     

("非汉字符号")模糊积分意义下的可积函数空间的若干性质

给出 ( S)模糊积分的定义 ,讨论其基本性质。当模糊测度 μ满足 ( T)条件 (见命题 3.3)时 ,可以得到 ,( S)模糊积分的 p次 ( S)模糊可积函数空间 Lp( p≥ 1 )是实数域 R上的线性空间 ,且当 μ次可加时 ,Lp( p≥ 1 )在相应的距离 ρp(定义 4 .3)下 ,( Lp,ρp)构成一完备的距离空间     

((S_))模糊积分意义下的可积函数空间的若干性质

给出((S_))模糊积分的定义,讨论其基本性质.当模糊测度μ满足(T)条件(见命题3.3)时,可以得到,((S_))模糊积分的P次((S_))模糊可积函数空间Lp(P≥1)是实数域R上的线性空间,且当μ次可加时,Lp(P≥1)在相应的距离ρp(定义4.3)下,(Lp,ρp)构成一完备的距离空间.     

模糊值测度与模糊鞅

本文在一般测度空间（T，J，μ）中证明模糊值测度关于μ的Radon-Nikodym导数（R－N导数）的存在性和唯一性。在完备的概率空间（Ω，H，P）中引进一个模糊随机变量关于H的一个子σ代数H0的模糊条件期望，并证明这样定义的模糊条件期望存在且唯一，还就其某些性质作了讨论。最后给出模糊鞅的定义并证明模糊鞅收敛定量。     

非绝对模糊积分,绝对可积性与积分的绝对值不等式

关于模糊数值函数的绝对可积性及对应的积分不等式,无论在何种绝对值意义下是值得讨论的. 本文借助于模糊数空间到具体的 Banach 空间上的嵌入定理和模糊非绝对积分的刻划定理, 讨论了模糊数值函数的绝对可积性及对应的积分不等式,得到了若干个充分必要条件, 并举出了一些反例.     

广义模糊数值Choquet积分的自连续性与其结构特征的保持

在一般模糊测度空间的任一子集上，针对给定的μ-可积数模糊数值函数，定义所谓广义的模糊数值Choquet积分，并将这种积分整体看成可测空间上的模糊数值集函数．进而讨论并研究它的上(下)自连续性，逆上(下)自连续性，一致自连续性和一致逆自连续性等结构特征．     

广义模糊数值Choquet积分的伪自连续及其遗传性

在广义模糊测度空间上,针对已经给出的广义模糊数值Choquet积分,将这种积分整体看成可测空间上取值于模糊数的集函数,研究当模糊测度满足伪自连续、伪一致自连续性时,这种模糊数值Choquet积分所保持的一些遗传性．     

K-拟可加模糊数值积分的自连续性

本文在K-拟可加模糊测度空间上建立了K-拟可加模糊数值积分,利用其积分转换定理和诱导算子的性质,将这种积分整体看成可测空间上取值于模糊值和集函数,从而使得这种模糊积分不仅具有自连续性,而且也满足逆自连续性。这些特性能更好地描述模糊值可测函数列和K-拟可加模糊数值积分序列的收敛性。     

集值随机过程的投影

本文研究了集值可积变差随机过程的可选和可料对偶投影．当Ｂａｎａｃｈ空间Ｘ具有ＲＮＰ,其对偶空间Ｘ＊可分时,证明了Ｐｗｋｃ（Ｘ）值的可积变差过程存在唯一的可选和可料对偶投影．最后讨论了集值随机过程对偶投影的性质．     

Differentiability of Lipschitz Maps from Metric Measure Spaces to Banach Spaces with the Radon–Nikodym Property

We prove the differentiability of Lipschitz maps X → V, where X denotes a PI space, i.e. a complete metric measure space satisfying a doubling condition and a Poincaré inequality, and V denotes a Banach space with the Radon–Nikodym Property (RNP). As a consequence, we obtain a bi-Lipschitz nonembedding theorem for RNP targets. The differentiation theorem depends on a new specification of the differentiable structure for PI spaces involving directional derivatives in the direction of velocity vectors to rectifiable curves. We give two different proofs of this, the second of which relies on a new characterization of the minimal upper gradient. There are strong implications for the infinitesimal structure of PI spaces which will be discussed elsewhere.     

ON LKUR SPACES

In this paper it is proved that if X is an LKUR space,then X has(H)property andif X is an LKUR space,then X has RNP.Also,if M is a Chebyshev subspace of LKURspace,then P(M) is continuous.     

B值渐近鞅的估值性质

本文用 B值渐近鞅的 Doob分解,研究了取值于具有 RNP且对偶可分的 Banach空间B值渐近鞅的估值性质,给出了一系列结果及其证明.     

Moduli of non-dentability and the radon-nikodým property in banach spaces

We show that for a separable Banach spaceX failing the Radon-Nikodym property (RNP), andε > 0, there is a symmetric closed convex subsetC of the unit ball ofX such that every extreme point of the weak-star closure ofC in the bidualX** has distance fromX bigger than 1 −ε. An example is given showing that the full strength of this theorem does not carry over to the non-separable case. However, admitting a renorming, we get an analogous result for this theorem in the non-separable case too. We also show that in a Banach space failing RNP there is, forε > 0, a convex setC of diameter equal to 1 such that each slice ofC has diameter bigger than 1 −ε. Some more related results about the geometry of Banach spaces failing RNP are given.     

THE WEAK RADON-NIKODYM PROPERTY IN SPACES OF NUCLEAR OPERATORS

Abstract

We prove that if X and Y are Banach spaces such that X* has the weak Radon-Nikodym property (WRNP), Y has the Radon-Nikodym property (RNP) and Y is complemented in its bidual, then the space N(X,Y) of all nuclear operators from X to Y has the WRNP. If moreover X* has the RNP, then N(X,Y) has the RNP.     

The Average Range Characterization of the Radon–Nikodym Property

A characterization of Banach spaces possessing the Radon—Nikodym property is given in terms of the average range of additive interval functions. We prove that a Banach space X has the RNP if and only if each X-valued additive interval function possessing absolutely continuous McShane (or Henstock) variational measure has nonempty average range almost everywhere on [0, 1].     

The dual Radon–Nikodym property for finitely generated Banach <Emphasis Type="Italic">C</Emphasis>(<Emphasis Type="Italic">K</Emphasis>)-modules

We extend the well-known criterion of Lotz for the dual Radon–Nikodym property (RNP) of Banach lattices to finitely generated Banach C(K)-modules and Banach C(K)-modules of finite multiplicity. Namely, we prove that if X is a Banach space from one of these classes then its Banach dual \(X^\star \) has the RNP iff X does not contain a closed subspace isomorphic to \(\ell ^1\).     

A construction of ℒ∞-spaces and related Banach spacesand related Banach spaces

Let λ>1. We prove that every separable Banach space E can be embedded isometrically into a separable ℒ _∞ ^λ -spaceX such thatX/E has the RNP and the Schur property. This generalizes a result in [2]. Various choices ofE allow us to answer several questions raised in the literature. In particular, takingE = ℓ₂, we obtain a ℒ _∞ ^λ -spaceX with the RNP such that the projective tensor product containsc ₀ and hence fails the RNP. TakingE=L ¹, we obtain a ℒ _∞ ^λ -space failing the RNP but nevertheless not containingc ₀.