Acta mathematica scientia,Series A ›› 1998, Vol. 18 ›› Issue (4): 419-428.

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Convergence of Bi-random Dirichlet Serties

Tian Fanji   

  1. Department of Mathematics, Wuhan University, Wuhan 430072
  • Received:1997-03-25 Online:1998-12-26 Published:1998-12-26

Abstract: Consider the convergence of bi-random Dirchlet series ∑n=lan(ω)en(ω)s, wherean an(ω) and λn(ω) are random variables, we study the limit properties of ∑i=lnan(ω) and λn(ω) by thestrong law of large numbers and the central limits theorems. Some simple and explict formulae of the absciasssa of convergence σc attained under one of following conditions:(i) 0 < limn→∞|(∑i=lnEai)/n| ≤ limn→∞|(∑i=lnEai)/n| < ∞; (ii) {an} is a sequence of real or complex independent andequally distributed random variables with finite variances D(an); (iii) {an} is a sequence of independent random with expectation Ean=0 and other suitable conditions.

Key words: Weak Dirichlet series, Bi-random Dirichlet series, The strong law of large numbers, Variance

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