局部紧半群上概率测度的强一致组合收敛性

讨论局部紧拓扑半群上相互独立但不同分布的概率测度卷积序列的极限性质、首先研究测度子半群与其支撑集在结构上的相依性,进而通过支撑集的代数结构在局部紧拓扑半群上给出一个概率测度序列强一致组合收敛的充要条件,并在此基础上找出一类拓扑半群S,使得当μ_k,n(?)λ_k,能确保λ_k(?)某个Haar测度.     

拓扑半群上概率测度序列组合收敛性的若干极限定理

本文研究了拓扑半群上概率测度序列{μ_n}的组合收敛性,即卷积序列μ_(k,n):=μ_(k+1)*μ_(k+2)*…*μ_n的极限性质.通过对概率测度支撑集代数结构的研究,首先得到可数离散半群上概率测度序列组合收敛的一个充分条件,它推广了经典的Marksimov定理,也推广和改进了文献中已有的一些结果.其次给出了局部紧H半群上概率测度卷积序列{μ_(k,n):0≤kn}极限点集的一个构造定理,它是群上经典结果在这类半群上的推广.     

紧拓扑半群上概率测度的简单半群及其支撑集

本文讨论一类拓扑半群上概率测度的极限性质．首先在紧半群上研究测度的简单半群和它的支撑集的相依关系;然后讨论测度的卷积幂ｕｎ收敛到Ｈａａｒｒ测度的充要条件．     

一类紧半群上概率测度卷积幂的弱收敛性

本文讨论紧半群上概率测度卷积幂的弱收敛性，将紧群上的Ｋａｗａｄａ－Ｉｔ６型结果以相应的形式建立到一类紧半群上．本文的结论蕴含了［１］中的定理２．１．４与［２］中的定理１．     

一类紧半群上概率测度卷积的弱收敛性

本文讨论紧半群上概率测度卷积幂的弱收敛性，将紧群上的Ｋａｗａｄａ－Ｉｔｏ型结果以相应的形式建立到一类紧半群上。本文的结论蕴含了［１］中的定理２．１．４与［２］中的定理１。     

一类紧半群上概率测度的强组合收敛性

本文讨论紧半群上概率测度的强组合收敛性，通过对概率测度支撑集代数结构的研究，得到了一些充分条件与必要条件，这些结果推广了文献[1]-[3]中的相应结论。     

局部紧拓扑半群上概率测度卷积幂的若干极限定理

我们通过研究极限测度的不变性质，讨论了局部紧拓扑半群上概率测度卷积幂的若干极限性状．推广了[1]－[3]中的若干结果．     

局部紧H半群上概率测度卷积幂的弱收敛性

本文讨论局部紧Ｈ半概率测度卷积幂的弱收敛性,将紧群上的Ｋａｗａｄａ－Ｉｔｏ型结果以某种相应的形式建立到局部紧Ｈ半群,由于紧半群上的概率测度卷积幂序列必为 ,所以,不仅Ｋａｗａｄａ－Ｉｔｏ经典结果是本文的特例,而且「１」中的定理和「２」中的定理２都可以作为本文定理的推论     

局部紧H半群上概率测度序列的组合收敛性

首先讨论可数离散H半群上组合收敛的概率测度序列的一些极限性质,证明了相关文献中关于组合收敛必要条件的一个猜想.其次当半群具有交换性时,在同分布场合建立了强Kloss准则,证明经适当的shift变换可使概率测度卷积幂序列收敛到某个不变测度.最后讨论具有紧核的局部紧H半群上的概率测度卷积序列聚点集的构造.这些结果推广和改进了一些已有的结论.     

集值L^1—极限鞅的集值鞅逼近及其收敛性

本文证明了集值Ｌ~１－极限鞅的集值鞅逼近定理，并利用此结果以及集值鞅的收敛性结果讨论了集值Ｌ~１－极限鞅的收敛性．     

紧交换半群上概率测度卷积序列的极限性质

本文用“部分群化”的方法研究紧交换半群上概率测度的极限性质.§3讨论 i.i.d 的情形,将紧群上的 Kawada-It(?)型结果以相应的形式建立到紧交换半群上.§4讨论独立非同分布的情形,建立了紧交换半群上的强 Kloss 收敛准则,它曾由苏联学者 Maksimov先后在有限群([1])与紧群上([2])得到.     

Convolution semigroups of states

Convolution semigroups of states on a quantum group form the natural noncommutative analogue of convolution semigroups of probability measures on a locally compact group. Here we initiate a theory of weakly continuous convolution semigroups of functionals on a C*-bialgebra, the noncommutative counterpart of a locally compact semigroup. On locally compact quantum groups we obtain a bijective correspondence between such convolution semigroups and a class of C ₀-semigroups of maps which we characterise. On C*-bialgebras of discrete type we show that all weakly continuous convolution semigroups of states are automatically norm-continuous. As an application we deduce a known characterisation of continuous conditionally positive-definite Hermitian functions on a compact group.     

局部紧半群上概率测度组合收敛的某些结果

本文讨论局部紧半群上概率测度的组合收敛性,主要结果是利用局部群化的方法给出了概率测度组合收敛的一些结果.     

An analogue of Hunt's representation theorem in quantum probability

In quantum mechanics certain operator-valued measures are introduced, called instruments, which are an analogue of the probability measures of classical probability theory. As in the classical case, it is interesting to study convolution semigroups of, instruments on groups and the associated semigroups of probability operators, which now are defined on spaces of functions with values in a von Neumann algebra. We consider a semigroup of probability operators with a continuity property weaker than uniform continuity, and we succeed in characterizing its infinitesimal generator under the additional hypothesis that twice differentiable functions belong to the domain of the generator. Such hypothesis can be proved in some particular cases. In this way a partial quantum analogue of Hunt's representation theorem for the generator of convolution semigroups on Lie groups is obtained. Our result provides also a closed characterization of generators of a new class of not norm continuous quantum dynamical semigroups.     

Some Results Concerning Convergence of Convolution Products of Probability Measures on Discrete Semigroups

Two types of conditions have been significant when considering the convergence of convolution products of nonidentical probability measures on groups and semigroups. The essential points of a sequence of measures have been useful in characterizing the supports of the limit measures. Also, enough mass eventually on an idempotent has proven sufficient for convergence in a number of structures. In this paper, both of these types of conditions are analyzed in the context of discrete non-abelian semigroups. In addition, an application to the convergence of nonhomogeneous Markov chains is given.     

A quantum analogue of Hunt's representation theorem for the generator of convolution semigroups on Lie groups

Summary In quantum mechanics certain operator-valued measures are introduced, called instruments, which are an analogue of the probability measures of classical probability theory. As in the classical case, it is interesting to study convolution semigroups of instruments on groups and the associated semigroups of probability operators. In this paper the case is considered of a finite-dimensional Hilbert space (n-level quantum system) and of instruments defined on a finite-dimensional Lie group. Then, the generator of a continuous semigroup of (quantum) probability operators is characterized. In this way a quantum analogue of Hunt's representation theorem for the generator of convolution semigroups on Lie groups is obtained.     

Measurable centres in convolution semigroups

In certain convolution semigroups over locally compact groups, the only measurable translations are those defined by Radon measures. In other words, the measurable centre of every such convolution semigroup consists of Radon measures.