Tails in a Fixed-Point Problem for a Branching Process with State-Independent Immigration

Sergey Foss, Masakiyo Miyazawa

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

We consider a fixed-point equation for a non-negative integer-valued random variable, that appears in branching processes with state-independent immigration. A similar equation appears in the analysis of a single-server queue with a homogeneous Poisson input, feedback and permanent customer(s).

It is known that the solution to this equation uniquely exists under mild first and logarithmic moments conditions. We find further the tail asymptotics of the distribution of the solution when the immigration size and branch size distributions are heavy-tailed. We assume that the distributions of interest are dominantly varying and have a long tail. This class includes, in particular, (intermediate, extended) regularly varying distributions.

We consider also a number of generalisations of the model.

Язык оригиналаанглийский
Страницы (с-по)613-635
Число страниц23
ЖурналMarkov Processes And Related Fields
Том26
Номер выпуска4
СостояниеОпубликовано - 2020

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