函数空间SUF的RNP与模糊上鞅

本文证明取值于度量空间的函数的Ｂｏｃｈｎｅｒ积分与Ａｕｍａｎｎ积分是等价的，且积分值相等。空间的Ｒａｄｏｎ－Ｎｉｋｏｄｙｍ性质（简称ＲＮＰ）在正线性等距映射下保持不变。在此基础上得到空间ＳＵＦ具有ＲＮＰ，且把诸结果应用于模糊上秧的研究，得到了模糊上鞅的几个收敛定理。     

极限lim x→＋∞f（x）=0的一个充分条件的探讨

从无穷积分∫＋∞ a f（x）dx收敛与无穷远极限lim x→＋∞f（x）=0之间的关系展开论述，研究在广义积分∫＋∞ a f（x）dx收敛的前提下，无穷远极限lim x→＋∞f（x）=0的一个充分条件．在此基础上，适当减弱条件得到该条件的推广形式，为更好的解决无穷远极限lim x→＋∞f（x）=0的问题提供更一般的方法．     

映射系统中的零序列

设（Ｅ，ｒ）是局部凸拓扑向量空间，Ω是任意抽象集合，Ｆ∈Ｅ＾Ω，（ｘｊ）∈Ω是映射系统（Ω，Ｆ）中的零序列，即对每个ｆ∈Ｆ，（ｆ（ｘｊ））都是（Ｅ，τ）中收敛于０的序列，本文给出了序列（ｆ（ｘｊ））的Ｆ的子集Ｂ上一致收敛于０的刻划。     

无穷限反常积分收敛时被积函数的极限状态

根据无穷限反常积分∫a^＋∞f（x）dx收敛的柯西准则和定积分的性质,讨论被积函数f（x）当x→∞时。的极限状态,并得出当无穷限反常积分∫a^＋∞f（x）dx收敛且f（x）在[a,＋∞）上连续,或者无穷限反常积分∫a^＋∞f（x）dx绝对收敛时,存在数列{xn}∩[a,＋∞]且xn→＋∞（n→∞）,使limn→∞xnf（xn）=0.     

计算广义积分时易犯的一个错误

设f(x)在[a, ∞)连续,F(x)是其一个原函数,则广义积分（?）可记为（?）实际计算时,以上算式可以简化表成形式:(?)这里上限十∞代入F(x)时为取极限(?)的意思,此极限的存在与否决定广义积分是否收敛.类似,以a为瑕积分(?)可以简化表成(?)这里下限a代入F(X)时为取极限的意思.     

从Riemann积分的定义看推广变量收敛理论的必要性

指出了R iem ann积分定义中积分和的极限已超出了数学分析中变量极限理论的范围,由此看出推广变量极限理论是必要的;简要地介绍了更一般的收敛理论,即网的Moore-Sm ith收敛理论,并通过这种收敛理论给出了定积分的严格定义.     

函数列的黎曼积分极限定理的应用

利用函数列的极限理论方法,研究函数列积分极限中积分和极限可交换次序的问题.对一致收敛的可积函数列给出积分的极限定理,对一致有界局部一致收敛函数列给出积分控制收敛定理,通过大量实例表明该理论的意义所在.     

闭逐块光滑流形上的Cauchy—Fantanppie型积分的边界性质

对Ｃ＾ｎ空间中具有逐块Ｃ＾（１）光滑可定向边界δＤ的有界域Ｄ和著名的Ｃａｕｃｈｙ－Ｆａｎｔａｐｐｉｅ公式，本文定义一类与Ｂｏｃｈｎｅｒ－ｍａｒｔｉｎｅｌｌｉ核同伦等价的Ｃ－Ｆ核Ω，应用同伦方法证明具有Ｈｏｌｄｅｒ密度的相应奇异积分Ｆ（ｔ）存在哥西主值和Ｃ－Ｆ型积分Ｆ（ｚ）存在满足Ｈｏｌｄｅｒ条件的内，外极限值Ｆ＾＋（ｔ）和Ｆ＾－（ｔ）；同时建立一个更一般的含有边界上点ｔ的立体角系数α（ｔ）的Ｐｌｅ     

闭逐块光滑流形上的Cauchy－Fantappie型积分的边界性质

对Ｃ￣ｎ空间中具有逐块Ｃ￣（１）光滑可定向边界Ｄ的有界域Ｄ和著名的Ｃａｕｃｈｙ－Ｆａｎｔａｐｐｉｅ公式，本文定义一类与Ｂｏｃｈｎｅｒ－Ｍａｒｔｉｎｅｌｌｉ核同伦等价的Ｃ－Ｆ核Ω，应用同伦方法证明具有Ｈｏｌｄｅｒ密度的相应奇异积分Ｆ（ｔ）存在哥西主值和Ｃ－Ｆ型积分Ｆ（ｚ）存在满足Ｈｏｌｄｅｒ条件的内、外极限值Ｆ￣＋（ｔ）和Ｆ￣－（ｔ）；同时建立一个更一般的含有边界上点ｔ的立体角系数α（ｔ）的Ｐｌｅｍｅｌｊ公式。     

单纯形上Bernstein多项式的迭代极限

单纯形上Ｂｅｒｎｓｔｅｉｎ多项式的迭代极限陈发来（中国科学技术大学数学系，合肥２３００２６）ＬＩＭＩＴＯＦＩＴＥＲＡＴＥＳＦＯＲＢＥＲＮＳＴＥＩＮＰＯＬＹＮＯＭＩＡＬＳＤＥＦＩＮＥＤＯＮＡＳＩＭＰＬＥＸ￥ＣＨＥＮＦＡＬＡＩ（ＤｅｐａｒｔｍｅｎｔｏｆＭ...     

关于集值Bartle积分新的极限定理

给出集值Bartle积分一个新的定义,并进一步讨论了数值函数关于有界闭凸集值可数可加集值测度的积分的性质,建立了集值Bartle积分的新的极限定理.     

The elements of integration

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The elements of integration Robert G. Bartle John Wiley & Sons, Inc., 1966, 140 pgs. US$ 8.95

     

On integration of vector functions with respect to vector measures

We study integration of Banach space-valued functions with respect to Banach space-valued measures. We focus our attention on natural extensions to this setting of the Birkhoff and McShane integrals. The corresponding generalization of the Birkhoff integral was first considered by Dobrakov under the name S*-integral. Our main result states that S*-integrability implies McShane integrability in contexts in which the later notion is definable. We also show that a function is measurable and McShane integrable if and only if it is Dobrakov integrable (i.e. Bartle *-integrable).     

Product integration rules for volterra integral equations of the first kind

The numerical solution of Volterra integral equations of the first kind can be achieved via product integration. This paper establishes the asymptotic error expansions of certain product integration rules. The rectangular rules are found to produce expansions containing all powers ofh, and the midpoint product method is found to produce even powers ofh. Extrapolation to the limit is then applied.     

The Bartle Bilinear Integration and Carleman Operators

Some characterizations of integrable functions in the bilinear sense of Bartle with respect to the injective tensor product are obtained. As a consequence it is shown that the kernels of Carleman compact operators coincide with these Bartle integrable functions. This result is applied to prove that every Carleman L-weak-compact operator is compact. An example showing the different behavior of the integrability with respect to the projective tensor product is given. A general Fubini theorem in this setting is shown.     

An explicit upper bound for Weil-Petersson volumes of the moduli spaces of punctured Riemann surfaces

An explicit upper bound for the Weil-Petersson volumes of punctured Riemann surfaces is obtained using Penner's combinatorial integration scheme from [4]. It is shown that for a fixed number of punctures n and for genus g increasing, while this limit is exactly equal to two for n=1. Received: 17 May 2000 / Revised version: 9 August 2000 / Published online: 23 July 2001     

Absolute continuity of a vector-valued measure

The necessary and sufficient condition is proved for absolute continuity of a vector-valued measure in the sense of Bartle.     

A spectral integral representation for decomposable operators

For the operators commuting with a spectral measure, a Bartle type integral representation in the spirit of the one provided by the spectral theorem for normal operators is obtained. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

The Bartle-Dunford-Schwartz theorem and projection operators in certain banach lattices

The projection map used successfully by Kakutani in his classical characterization of abstract L-spaces is used to establish a variant for certain Banach lattices of a theorem of Bartle, Dunford and Schwartz which dealth with absolute continuity in spaces of measures. Entrata in Redazione il 27 settembre 1999.     

A central limit theorem for stationary random fields

Summary. We prove a central limit theorem for strictly stationary random fields under a projective assumption. Our criterion is similar to projective criteria for stationary sequences derived from Gordin's theorem about approximating martingales. However our approach is completely different, for we establish our result by adapting Lindeberg's method. The criterion that it provides is weaker than martingale-type conditions, and moreover we obtain as a straightforward consequence, central limit theorems for α-mixing or φ-mixing random fields. Received: 19 February 1997 / In revised form: 2 September 1997