共查询到20条相似文献,搜索用时 62 毫秒
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本文研究随机环境中独立过程的Hydrodynamic极限,在恰当的条件下,构造出了随机环境中的独立过程,并通过对偶公式得到了该粒子模型的宏观偏微分方程。 相似文献
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随机环境中纯生过程的一个极限性质 总被引:1,自引:0,他引:1
本文证明了随机环境中纯生过程的一个强极限性质,假设环境为一混合序列,不必平稳,且具有有限均值,混合系数由环境序列中一对随机变量而定。 相似文献
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随机环境中多类型接触过程的Hydrodynamic极限 总被引:1,自引:0,他引:1
本文首先构造环境中多类型接触过程,然后研究其Hydrodynamic行为,证明了该模型的Hydrodynamic极限是下列偏微分方程的解。 相似文献
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令$\{Z_{n}, n\ge 0\}$为独立同分布随机环境下的上临界分支过程$\xi=(\xi_n)_{n\geq 0}$.本文给出了$\ln (Z_{n+n_{0}}/Z_{n_{0}})$的一些偏差不等式及其在构造置信区间上的一些应用. 相似文献
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给出了可数状态空间中时间随机环境下可逗留随机游动的一个统一模型,对于一维紧邻时间随机环境下的随机游动,在一定的条件下,讨论它的极限性质和中心极限定理,该结论类似于空间随机环境下的随机游动的有关结论. 相似文献
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1 Introduction and Main ResultsLet {X.,n > 1} be a sequence of random variables in the same probability space andnput Sn = Z Xj, n 2 1. ln real-valued case1 the rates of convergence to zero of qualltitiesi = 1P(lS.I/n'/' > E) (0 < f < 2) are described by the well-known theorem of Baum and Katz(1965):Theorem BK Let 0 < t < 2,r 2 1, and let {X., n 2 1} be real valued iid r.v.'s, when1 5 t < 2, EXl = 0. ThenIn l985, Bai and Su generalized Theorem BK and obtained the correspondillg resul… 相似文献
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Zhou Xianyin 《数学年刊B辑(英文版)》1995,16(1):131-138
ONTHERANGEOFRANDOMWALKSINRANDOMENVIRONMENT¥ZHOUXIANYIN(DepartmentofMathematics,BeijingNormalUniversity,Beijing100875,China.Pr... 相似文献
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《数学物理学报(B辑英文版)》1995,(4)
APPROXIMATIONOFGENERALIZEDBI-AXIALLYSYMMETRICPOTENTIALSWITHFASTRATESOFGROWTH¥H.S.Kasana(Dept.ofMath.,BirlaIust.ofTech.&Sci.,P... 相似文献
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We consider a branching random walk with a random environment in time, in which the offspring distribution of a particle of generation n and the distribution of the displacements of its children depend on an environment indexed by the time n. The environment is supposed to be independent and identically distributed. For AR, let Zn(A) be the number of particles of generation n located in A. We show central limit theorems for the counting measure Zn(·) with appropriate normalization. 相似文献
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In this article, we mainly discuss the asymptotic behavior for multi-dimensional continuous-time random walk in random environment with holding times. By constructing a renewal structure and using the point "environment viewed from the particle", under General Kalikow's Condition, we show the law of large numbers (LLN) and central limit theorem (CLT) for the escape speed of random walk. 相似文献
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Lin Zhengyan 《数学年刊B辑(英文版)》1997,18(2):213-222
ONLARGEINCREMENTSOFlpVALUEDGAUSSIANPROCESSESLINZHENGYANAbstractLet{Xk(t),t≥0},k=1,2,…,beasequenceofindependentGaussianproce... 相似文献
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陈振龙 《数学物理学报(B辑英文版)》2011,31(3):969-992
This paper studies fractal properties of polar sets for random string processes. We give upper and lower bounds of the hitting probabilities on compact sets and prove some sufficient conditions and necessary conditions for compact sets to be polar for the random string process. Moreover, we also determine the smallest Hausdorff dimensions of non-polar sets by constructing a Cantor-type set to connect its Hausdorff dimension and capacity. 相似文献
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本文证明了具有三次曲线解y=αx3的中心对称三次系统可以存在极限环,从而纠正了文[1]认为具有三次曲线解的中心对称三次系统不可能存在极限环的错误结论 相似文献