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JOURNALS // Diskretnaya Matematika // Archive

Diskr. Mat., 2025 Volume 37, Issue 2, Pages 120–136 (Mi dm1855)

Limit theorems for the number of trees of a given size in a Galton–Watson forest with a bounded number of vertices

E. V. Khvorostyanskaya

Institute of Applied Mathematical Research of the Karelian Research Centre RAS, Petrozavodsk

Abstract: We consider a random forest formed by trajectories of a homogeneous Galton – Watson branching process starting with $N$ particles, the number of offsprings has the distribution $p_k=(k+1)^{-\tau}-(k+2)^{-\tau}$, $k=0,1,2,\dots.$ For the Galton – Watson forest containing at most $n$ vertices limit distributions of the number of trees of a given size as $N,n\to\infty$ are obtained for different values of the parameter $\tau$.

Keywords: Galton-Watson forest, number of trees of a given size, limit distribution.

Received: 07.11.2024

DOI: 10.4213/dm1855



© Steklov Math. Inst. of RAS, 2025