共查询到20条相似文献,搜索用时 109 毫秒
1.
梁之舜 《数学年刊A辑(中文版)》1984,(2)
本文把D.G.Kendall提出的Delphic-半群理论应用于随机点过程,首先证明了在完备可分距离空间上任一随机点过程的因子全体为紧集这一基本引理,进而证明了某些随机点过程族构成的半群在适当定义同态变换后为Delphic-半群。例如有限点过程族的卷积半群,如取点过程的特征母泛函的负对数为所要求的同态变换构成Delphic-半群。 相似文献
2.
本文提出了一种带移民的碰撞分枝过程,它由三部分组成:马氏分枝过程、碰撞分枝过程和状态独立的移民过程,给出了该过程正则性和唯一性判别准则。 相似文献
3.
考虑独立同分布的随机环境中带移民的上临界分枝过程(Zn).应用(Zn)与随机环境中不带移民分枝过程的联系,以及与相应随机游动的联系,在一些适当的矩条件下,本文证明关于log Zn的中心极限定理的Berry-Esseen界. 相似文献
4.
本文在独立同分布的随机环境下,建立带有移民的两性分枝过程{Zn}n≥0,且移民人口数依赖当前人口数,证得{Zn}n≥0和{(Fn,Mn)}n≥1是随机环境中的马氏链,并得到第n代每个配对单元平均增长率{rk}k≥0的极限性质,从而推广了经典两性分枝过程的相关理论. 相似文献
5.
6.
本文主要考虑带移民的n维分枝过程的分枝性质和衰减性质.对于这类过程,首先给出了分枝性质的等价条件,得到了衰减指数的精确值λ_Z,同时进一步讨论λ_Z-不变向量/测度和拟平稳分布. 相似文献
7.
文献[1]利用基本Dirichlet型构造了基本可逆Q过程P*(t),本文在此基础上,利用马氏半群无穷小算子的谱分解理论和Q过程的DonsKer-Varahan熵得到P*(t)是不断的充要条件,并且还研究了P*(t)的不变函数和不变测度. 相似文献
8.
9.
10.
11.
Skew convolution semigroups play an important role in the study of generalized Mehler semigroups and Ornstein–Uhlenbeck processes. We give a characterization for a general skew convolution semigroup on a real separable Hilbert space whose characteristic functional is not necessarily differentiable at the initial time. A connection between this subject and catalytic branching superprocesses is established through fluctuation limits, providing a rich class of non-differentiable skew convolution semigroups. Path regularity of the corresponding generalized Ornstein–Uhlenbeck processes in different topologies is also discussed. 相似文献
12.
《Stochastic Processes and their Applications》2020,130(2):1074-1102
In this paper we establish a weak and a strong law of large numbers for supercritical superprocesses with general non-local branching mechanisms. Our results complement earlier results obtained for superprocesses with only local branching. Several interesting examples are developed, including multitype continuous-state branching processes, multitype superdiffusions and superprocesses with discontinuous spatial motions and non-decomposable branching mechanisms. 相似文献
13.
1IntroductionItiswellknownthatthe(classical)DW-superprocessiscloselyassociatedwiththe(c1assical)FV-superprocess.Tl1isconnectionisfiIStobservedbyKonnoandShiga(1988),rigorouslyprovedbyEtheridgeandMarch(1991),andgeneralizedbyPerkins(l992).Infact,intermofapproximationofparticlesystemsthisrelationshipisratherintuitive,buttoproveitisnoteasy.I11thispaper,weshallconsiderthesanequestionforthemeasure-valuedprocesseswithinteractions.Forthesakeofbrevity,weomittheintroductionoftl1iskindofmeasure-value… 相似文献
14.
Zeng-hu Li 《Frontiers of Mathematics in China》2006,1(1):73-97
This is a survey on the recent progresses in the study of branching processes with immigration, generalized Ornstein-Uhlenbeck
processes, and affine Markov processes. We mainly focus on the applications of skew convolution semigroups and the connections
in those processes. 相似文献
15.
Zhao Xuelei 《数学年刊B辑(英文版)》1996,17(1):115-120
1.IntroductionSuperprocesses,i.e.,measure-vauedMarkovprocesses,havebeenanattractivetopicintherecenty6ars,whichcanbedefinedasfollows.Let((,Px)..MbeaMarkovprocesswithstrongcontinuousMarkovsemigroupSt(denotebyAitsinfinitesimaloperator,andbyPt(x,y)theassociatedtransitiollfunction).DenotebyMPthesetofallRadonmeasurespsatisfyingandbypC(t)(resp.pCc(t))thesetofpositivelycontinuousfUnctions(resp.withcompactsupport)int-Thesthcalledsuperprocess(X,P#).6MPwithparameters(andopandtakingvalueinMrisdete… 相似文献
16.
Conditional log-Laplace functional for a class of branching processes in random environments 下载免费PDF全文
Hao Wang 《数学学报(英文版)》2015,31(1):71-90
A conditional log-Laplace functional(CLLF) for a class of branching processes in random environments is derived. The basic idea is the decomposition of a dependent branching dynamic into a no-interacting branching and an interacting dynamic generated by the random environments.CLLF will play an important role in the investigation of branching processes and superprocesses with interaction. 相似文献
17.
We construct two kinds of stochastic flows of discrete Galton-Watson branching processes. Some scaling limit theorems for the flows are proved, which lead to local and nonlocal branching superprocesses over the positive half line. 相似文献
18.
19.
A new formulation of nonlocal branching superprocesses is given from which we derive as special cases the rebirth, the multitype, the mass-structured, the multilevel and the age-reproduction-structured superprocesses and the superprocess-controlled immigration process. This unified treatment simplifies considerably the proof of existence of the old classes of superprocesses and also gives rise to some new ones. 相似文献
20.
本文考虑一般介质作用下的分枝粒子系统,进而建立了一类比较广泛分枝机制下的超布朗运动.同时本文研究了这类超过程的轨道性质.亦即证明了其轨道连续性和局部绝对连续性 相似文献