Journal
ACTA MATHEMATICA SCIENTIA
Volume 41, Issue 5, Pages 1445-1473Publisher
SPRINGER
DOI: 10.1007/s10473-021-0504-7
Keywords
mixed state branching process; weak convergence; stochastic equation system; Wasserstein-type distance; stationary distribution
Categories
Funding
- National Key R&D Program of China [2020YFA0712900]
- National Natural Science Foundation of China [11531001]
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In this study, a continuous time and mixed state branching process is constructed by a scaling limit theorem of two-type Galton-Watson processes. The distribution of local jumps is derived from the stochastic equation system, and exponential ergodicity in Wasserstein-type distances of the transition semigroup is established. Immigration structures associated with the process are also investigated, along with the existence of the stationary distribution of the process with immigration.
A continuous time and mixed state branching process is constructed by a scaling limit theorem of two-type Galton-Watson processes. The process can also be obtained by the pathwise unique solution to a stochastic equation system. From the stochastic equation system we derive the distribution of local jumps and give the exponential ergodicity in Wasserstein-type distances of the transition semigroup. Meanwhile, we study immigration structures associated with the process and prove the existence of the stationary distribution of the process with immigration.
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