Abstract
A generalized stepping stone model with Ξ-resampling mechanism is a two dimensional probability-measure-valued stochastic process whose moment dual is similar to that of the classical stepping stone model except that Kingman’s coalescent is replaced by Ξ-coalescent. We prove the existence of such a process by specifying its moments using the dual function-valued Ξ-coalescent process with geographical labels and migration, and then verifying a multidimensional Hausdorff moment problem. We also characterize the stationary distribution of the generalized stepping stone model and show that it is not reversible if the mutation operator is of uniform jump-type.
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H. Liu’s research is supported by NSF of Hebei Province (Grant No. A2019205299), Hebei Education Department (Grant No. QN2019073), NSFC (Grant No. 11501164) and HNU (Grant No. L2019Z01). X. Zhou’s research is supported by Natural Sciences and Engineering Research Council of Canada (Grant No. RGPIN-2016-06704) and National Science Foundation of China (Grant No. 11771018)
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Liu, H.L., Zhou, X.W. Generalized Stepping Stone Model with Ξ-resampling Mechanism. Acta. Math. Sin.-English Ser. 38, 1998–2018 (2022). https://doi.org/10.1007/s10114-022-1092-8
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DOI: https://doi.org/10.1007/s10114-022-1092-8
Keywords
- Generalized stepping stone model
- (\(\Xi ,{\rm{A}},{u_1},{u_2}\))-CPGM
- multidimensional Hausdorff moment problem
- stationary distribution
- reversibility