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arXiv · 2501.12688

Replicator dynamics as the large population limit of a discrete Moran process in the weak selection regime: A proof via Eulerian specification

Marco Morandotti·Gianluca Orlando
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Abstract

We study the large population limit of a multi-strategy discrete-time Moran process in the weak selection regime. We show that the replicator dynamics is interpreted as the large-population limit of the Moran process. This result is obtained by interpreting the discrete process in its Eulerian specification, proving a compactness result in the Wasserstein space of probability measures for the law of the proportions of strategies, and passing to the limit in the continuity equation that describes the evolution of the proportions.

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Marco Morandotti, Gianluca Orlando. 2025-01-22. Replicator dynamics as the large population limit of a discrete Moran process in the weak selection regime: A proof via Eulerian specification. https://arxiv.org/abs/2501.12688

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