Math Colloquium: Megan Owen
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).
Hosted By
Admission Price
Free
Speaker
Megan Owen, CUNY Graduate Center
Title
The geometric space of phylogenetic trees: Algorithms and Applications
Abstract
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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CUNY attendees must show proof of vaccination by presenting a valid CUNY Access Pass through the CLEARED4 health validation platform upon entry. Non-CUNY visitors will need to show proof of ID by presenting a valid government-issued photo document. See the full Building Entry Policy for more information.