I am a mathematician specializing in stochastic processes and their applications, especially to biology. My research interests span a broad range of topics in probability theory, including diffusion processes, branching and exchangeable particle systems, and random measure-valued processes.
Here we see a family of coalescing random walks on an ancestral graph. This is the scaling limit for the quenched limit of coalescing random walks on the pedigree generated by a diploid Moran model with selfing.
I am presently thinking about various conditional coalescent models and the (non-)robustness of their limits, especially in the context of the evolution of self-fertilization.
"The quenched structured coalescent for diploid populations on finite graphs with large migrations and uneven offspring distributions"
"Quenched coalescent for diploid population models with selfing and overlapping generations" with Louis Wai-Tong Fan and John Wakeley.
"Gene genealogies in a diploid Moran model with selfing conditional on its pedigree" with Wai-Tong (Louis) Fan and John Wakeley. Theoretical Population Biology. Volume 165, October 2025, Pages 29-44.
I am also interested in various aspects of understanding the fitness landscape for biological populations. In the simplest sense, this landscape is modeled by solutions to the Fisher-Kolmogorov-Petrovsky-Piskuonov (FKPP) equation. I have been working on extending classical results on equations of KPP type to other geometric domains:
"Traveling wave profiles and asymptotics for equations of KPP type in warped product spaces'" (in preparation) with Louis Wai-Tong Fan
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Quenched limits for the coalescent of a diploid exchangeable population model with overlapping generations, Ph.D. Defense, IUB, July 2025
A modern perspective on coalescent theory and multi-locus population genetics, Population Genetics and Computational Biology Seminar, UChicago, December 2024