{ "id": "2109.13315", "version": "v2", "published": "2021-09-27T19:15:21.000Z", "updated": "2022-08-16T07:26:08.000Z", "title": "Critical branching processes in random environment with immigration: the size of the only surviving family", "authors": [ "Charline Smadi", "Vladimir A. Vatutin" ], "comment": "version, as published in the Proc. Steklov Inst. Math. arXiv admin note: text overlap with arXiv:1911.00316", "journal": "Proc. Steklov Inst. Math. 316 (2022)", "doi": "10.1134/S0081543822010230", "categories": [ "math.PR" ], "abstract": "We consider a critical branching process $Y_{n}$ in an i.i.d. random environment, in which one immigrant arrives at each generation. Let $% \\mathcal{A}_{i}(n)$ be the event that all individuals alive at time $n$ are offspring of the immigrant which joined the population at time $i$. We study the conditional distribution of $Y_{n}$ given $\\mathcal{A}_{i}(n)$ when $n$ is large and $i$ follows different asymptotics which may be related to $n$ ($% i$ fixed, close to $n$, or going to infinity but far from $n$).", "revisions": [ { "version": "v2", "updated": "2022-08-16T07:26:08.000Z" } ], "analyses": { "keywords": [ "critical branching process", "random environment", "surviving family", "immigration", "immigrant arrives" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }