random walks;
birth-and-death processes;
recurrence and transience;
martingales with continuous parameter;
stochastic calculus;
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D O I:
10.1017/S0004972723000539
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We derive conditions for recurrence and transience for time-inhomogeneous birth-and-death processes considered as random walks with positively biased drifts. We establish a general result, from which the earlier known particular results by Menshikov and Volkov ['Urn-related random walk with drift rho x(alpha)/t(beta)', Electron. J. Probab. 13 (2008), 944-960] follow.
机构:
Univ Salerno, Dipartimento Informat, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, ItalyUniv Salerno, Dipartimento Informat, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy
Giorno, Virginia
Nobile, Amelia G.
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机构:
Univ Salerno, Dipartimento Informat, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, ItalyUniv Salerno, Dipartimento Informat, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy