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Operator-selfdecomposable distributions as limit distributions of processes of Ornstein-Uhlenbeck type. (English) Zbl 0533.60021
A random variable X is said to have an operator-selfdecomposable or Lévy distribution if there are sequences $$\{X_ n\}$$, $$\{A_ n\}$$ and $$\{a_ n\}$$ of respectively independent random variables, linear operators, and vectors such that the random variables $$A_ n(X_ 1+...+X_ n)-a_ n$$ converge completely to X and in addition an infinitesimal condition is satisfied. Processes of Ornstein-Uhlenbeck type on Euclidean spaces are analogues of the Ornstein-Uhlenbeck process with the Brownian motion part replaced by general processes with homogeneous independent increments. The class of operator- selfdecomposable distributions is characterized as the class of limit distributions of processes of Ornstein-Uhlenbeck type. Integro- differential equations for operator-selfdecomposable distributions are established.
Reviewer: St.Wolfe

##### MSC:
 60E07 Infinitely divisible distributions; stable distributions 60J25 Continuous-time Markov processes on general state spaces
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