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Banach空间中无穷级数部份和的估计及应用
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作者 杨翰深 《四川建材学院学报》 1992年第4期56-63,共8页
本文定义了Banach空间中的囿变算子,提出了Banach空间无穷级数部份和∑T(n)的估计问题设T是从[1,+∞)到Banach空间E的一个囿变算子,本文的主要结果是:(1)指出了sum from i=1 to n T(i)-∫_1~nT(x)dx在Banach空间E中收敛;(2)给出了∑T(n... 本文定义了Banach空间中的囿变算子,提出了Banach空间无穷级数部份和∑T(n)的估计问题设T是从[1,+∞)到Banach空间E的一个囿变算子,本文的主要结果是:(1)指出了sum from i=1 to n T(i)-∫_1~nT(x)dx在Banach空间E中收敛;(2)给出了∑T(n)的两个估计。作为上述结论的应用,推广了实域R和复域C中一系列有关的经典结果。特别是文中关于Bernoulli数的新估计式,不仅可以简洁明快地解决并推广L.I.Nicolacscu[5]所提出的问题,而且可以给出不少有关的新结果。 展开更多
关键词 巴拿赫空间 变算子 无穷极数
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SOME FUNCTIONAL LIMIT THEOREMS FOR THE INFINITE SERIES OF OU PROCESSES 被引量:1
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作者 WANG WENSHENG LIN ZHENGYAN Department of Mathematics, Zhejiang University, Hangzhou 310028, China. Department of Mathematics, Hangzhou Teacher’s College, Hangzhou 310012, China. E-mail: wswang@mail.hz.zj.cn Department of Mathematics, Zhejiang University, Hangzhou 310028, China. 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2003年第2期249-260,共12页
This paper obtains functional modulus of continuity and Strassen's functional LIL of theinfinite series of independent Ornstein-Uhlenbeck processes, which also imply the Levy's exactmodulus of continuity and L... This paper obtains functional modulus of continuity and Strassen's functional LIL of theinfinite series of independent Ornstein-Uhlenbeck processes, which also imply the Levy's exactmodulus of continuity and LIL of this process respectively. 展开更多
关键词 Ornstein-Uhlenbeck processes Stationary Gaussian processes Modulus of continuity Law of the iterated logarithm
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On the elliptic curve y^2=x^3-2r Dx and factoring integers
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作者 LI XiuMei ZENG JinXiang 《Science China Mathematics》 SCIE 2014年第4期719-728,共10页
Let D=pq be the product of two distinct odd primes.Assuming the parity conjecture,we construct infinitely many r≥1 such that E2rD:y2=x3-2rDx has conjectural rank one and vp(x([k]Q))≠vq(x([k]Q))for any odd integer k,... Let D=pq be the product of two distinct odd primes.Assuming the parity conjecture,we construct infinitely many r≥1 such that E2rD:y2=x3-2rDx has conjectural rank one and vp(x([k]Q))≠vq(x([k]Q))for any odd integer k,where Q is the generator of the free part of E(Q).Furthermore,under the generalized Riemann hypothesis,the minimal value of r is less than c log4 D for some absolute constant c.As a corollary,one can factor D by computing the generator Q. 展开更多
关键词 elliptic curve integer factoring Selmer group
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