Abstract:
We prove a scaling limit theorem for discrete Galton–Watson processes in varying environments. A simple sufficient condition for the weak convergence in the Skorokhod space is given in terms of probability generating functions. The limit theorem gives rise to the continuous-state branching processes in varying environments studied recently by several authors.
Program for Probability and Statistics: Theory and Application
IRTL1704
Program for Innovative Research Team in Science and Technology in Fujian Province University
IRTSTFJ
Education and Scientific Research Project for Young and Middle-aged Teachers in Fujian Province of China
JAT200072
This work is supported by the National Key R&D Program of China (no. 2020YFA0712900), the National Natural Science Foundation of China (no. 11531001), the Program for Probability and Statistics: Theory and Application (no. IRTL1704), the Program for Innovative Research Team in Science and Technology in Fujian Province University (no. IRTSTFJ) and the Education and Scientific Research Project for Young and Middle-aged Teachers in Fujian Province of China (no. JAT200072).
Citation:
Rongjuan Fang, Zenghu Li, Jiawei Liu, “A Scaling Limit Theorem for Galton–Watson Processes in Varying Environments”, Branching Processes and Related Topics, Collected papers. On the occasion of the 75th birthday of Andrei Mikhailovich Zubkov and 70th birthday of Vladimir Alekseevich Vatutin, Trudy Mat. Inst. Steklova, 316, Steklov Math. Inst., Moscow, 2022, 145–168; Proc. Steklov Inst. Math., 316 (2022), 137–159