Open Access
December 2018 Wright–Fisher diffusions in stochastic spatial evolutionary games with death–birth updating
Yu-Ting Chen
Ann. Appl. Probab. 28(6): 3418-3490 (December 2018). DOI: 10.1214/18-AAP1390


We investigate stochastic spatial evolutionary games with death–birth updating in large finite populations. Within growing spatial structures subject to appropriate conditions, the density processes of a fixed type are proven to converge to the one-dimensional Wright–Fisher diffusions. Convergence in the Wasserstein distance of the laws of the occupation measures also holds. The proofs study the convergences under certain voter models by an equivalence between their laws and the laws of the evolutionary games. In particular, the additional growing dimensions in minimal systems that close the dynamics of the game density processes are cut off in the limit.

As another application of this equivalence of laws, we consider a first-derivative test among the major methods for these evolutionary games in a large population of size $N$. Requiring only the assumption that the stationary probabilities of the corresponding voting kernel are comparable to uniform probabilities, we prove that the test is applicable at least up to weak selection strengths in the usual biological sense [i.e., selection strengths of the order $\mathcal{O}(1/N)$].


Download Citation

Yu-Ting Chen. "Wright–Fisher diffusions in stochastic spatial evolutionary games with death–birth updating." Ann. Appl. Probab. 28 (6) 3418 - 3490, December 2018.


Received: 1 May 2017; Revised: 1 February 2018; Published: December 2018
First available in Project Euclid: 8 October 2018

zbMATH: 06994397
MathSciNet: MR3861817
Digital Object Identifier: 10.1214/18-AAP1390

Primary: 60F05 , 60J60 , 60K35 , 82C22

Keywords: evolutionary game , voter model , Wright–Fisher diffusion

Rights: Copyright © 2018 Institute of Mathematical Statistics

Vol.28 • No. 6 • December 2018
Back to Top