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定向集上B值mil的收敛性及Riesz分解
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作者 胡晓予 《数学物理学报(A辑)》 CSCD 北大核心 1990年第2期174-180,共7页
本文主要研究定向集上B值mil的收敛性和Riesz分解。在[2]中M.Talagrand证明了:一个L^1有界的B值mil(X_n)_(n∈N)有唯一分解X_n=Y_n+Z_n,其中(Y_n)_(n∈N)为L^1有界鞅,(Z_n)_(n∈N)为mil且‖Z_n‖→0。本文将这一结果推广到定向集上,我... 本文主要研究定向集上B值mil的收敛性和Riesz分解。在[2]中M.Talagrand证明了:一个L^1有界的B值mil(X_n)_(n∈N)有唯一分解X_n=Y_n+Z_n,其中(Y_n)_(n∈N)为L^1有界鞅,(Z_n)_(n∈N)为mil且‖Z_n‖→0。本文将这一结果推广到定向集上,我们证明了:若(X_t,(?)_t,t∈J)为取值于可分Banach空间的mil,(_t)_(t∈J)满足Vitali条件V^1,则X_t有唯一分解X_t=Y_t+Z_t,其中(Y_t)_(t∈J)为L^1有界鞅,(Z_t)_(t∈J)为mil且。 展开更多
关键词 定向集 收敛性 Riesz解 数学 物理
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ON MARKOV CHAINS IN SPACE-TIME RANDOM ENVIRONMENTS 被引量:7
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作者 胡迪鹤 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2009年第1期1-10,共10页
In Section 1, the authors establish the models of two kinds of Markov chains in space-time random environments (MCSTRE and MCSTRE(+)) with abstract state space. In Section 2, the authors construct a MCSTRE and a MCSTR... In Section 1, the authors establish the models of two kinds of Markov chains in space-time random environments (MCSTRE and MCSTRE(+)) with abstract state space. In Section 2, the authors construct a MCSTRE and a MCSTRE(+) by an initial distribution Φ and a random Markov kernel (RMK) p(γ). In Section 3, the authors es-tablish several equivalence theorems on MCSTRE and MCSTRE(+). Finally, the authors give two very important examples of MCMSTRE, the random walk in spce-time random environment and the Markov br... 展开更多
关键词 Random Markov kernel Markov chain in space-time random environemnt random walk in space-time random environment Markov branching chain in space-time random environment
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THE CONSTRUCTION OF DENUMERABLE q-PROCESSES IN RANDOM ENVIRONMENTS-THE EXISTENCE AND UNIQUENESS 被引量:3
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作者 胡迪鹤 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2008年第2期225-235,共11页
The concepts of Markov process in random environment, q-matrix in random environment, and q-process in random environment are introduced. The minimal q-process in random environment is constructed and the necessary an... The concepts of Markov process in random environment, q-matrix in random environment, and q-process in random environment are introduced. The minimal q-process in random environment is constructed and the necessary and sufficient conditions for the uniqueness of q-process in random environment are given. 展开更多
关键词 Markov process in random environment q-matrix in random environment q-process in random environment
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LIMIT THEOREMS FOR A GALTON-WATSON PROCESS IN THE I.I.D. RANDOM ENVIRONMENT 被引量:2
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作者 高振龙 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2012年第3期1193-1205,共13页
In this article, we obtain the central limit theorem and the law of the iterated logarithm for Galton-Watson processes in i.i.d, random environments.
关键词 Galton-Watson process in random environment central limit theorem law of the iterated logarithm
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THE CONSTRUCTION OF DENUMERABLE q-PROCESSES IN RANDOM ENVIRONMENTS SATISFYING (F) OR (B) 被引量:2
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作者 胡迪鹤 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2008年第4期975-988,共14页
This article is a continuation of[9].Based on the discussion of random Kolmogorov forward(backward)equations,for any given q-matrix in random environment, Q(θ)=(q(θ;x,y),x,y∈X),an infinite class of q-proces... This article is a continuation of[9].Based on the discussion of random Kolmogorov forward(backward)equations,for any given q-matrix in random environment, Q(θ)=(q(θ;x,y),x,y∈X),an infinite class of q-processes in random environments satisfying the random Kolmogorov forward(backward)equation is constructed.Moreover, under some conditions,all the q-processes in random environments satisfying the random Kolmogorov forward(backward)equation are constructed. 展开更多
关键词 Markov process in random environment q-matrix in random environment q-process in random environment
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THE BRANCHING CHAIN WITH DRIFT IN SPACE-TIME RANDOM ENVIRONMENT(I):MODEL,MARKOV PROPERTY,MOMENTS
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作者 胡迪鹤 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2010年第5期1669-1678,共10页
There are three parts in this article. In Section 1, we establish the model of branching chain with drift in space-time random environment (BCDSTRE), i.e., the coupling of branching chain and random walk. In Section... There are three parts in this article. In Section 1, we establish the model of branching chain with drift in space-time random environment (BCDSTRE), i.e., the coupling of branching chain and random walk. In Section 2, we prove that any BCDSTRE must be a Markov chain in time random environment when we consider the distribution of the particles in space as a random element. In Section 3, we calculate the first-order moments and the second-order moments of BCDSTRE. 展开更多
关键词 branching chain with drift in space-time random enviromnent randombranching generating function local random transition generating function random drift law random branching law
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