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Conference "SIMC Youth Race"
March 16, 2023 15:50–16:30, Moscow, Steklov Mathematical Institute of RAS, conference hall, 9 floor
 


Large Deviations for Galton–Watson branching processes with immigration

G. A. Bakai
Video records:
MP4 413.9 Mb
MP4 537.1 Mb
Supplementary materials:
Adobe PDF 848.7 Kb

Number of views:
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Video files:47
Materials:20



Abstract: Let $\{Z_n\}_{n\ge 0}$ be a Galton–Watson branching process with immigration in one particle. By definition, put
$$ Z_0 = 0,\quad Z_{n} = \sum_{j=1}^{1+Z_{n-1}}X_{n,j},\quad n\in\mathbb{N}. $$
Here random variables $X_{i,j}$ are independent identically distributed taking non-negative integer values. Put
$$ S_0 = 0,\quad S_n = \sum_{i=1}^{n} Z_i. $$
We obtain the exact asymptotics of large deviations probabilities for $S_n$ in the local form. In the subcritical case ($\mathbf{ E}X_{1,1}<1$) under small additional restrictions we obtain the local central limit theorem.

Supplementary materials: Bakai_BWGP_report.pdf (848.7 Kb)

Language: English
 
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