Math Colloquium: Megan Owen

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Monday, March 27, 2023

3:00 pm

4214: Math Lounge

Internal Event

The event is in-person at the CUNY Graduate Center, Room 4214 (Math Lounge).

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Megan Owen, CUNY Graduate Center


The geometric space of phylogenetic trees: Algorithms and Applications


A phylogenetic tree represents the evolutionary history of a set of organisms, like marsupials or virus strains. Billera, Holmes, and Vogtmann defined a moduli space of metric trees to provide a natural geometric setting for analyzing phylogenetic tree data. This treespace is CAT, or non-positively curved, allowing algorithms to quickly compute distances and Frechet means. I will discuss both these algorithms and some recent applications of this space to problems in evolutionary biology.

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