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Outward-facing mathematics

OPEN NEIGHBORHOOD

April 7, 2021      4:30 pm
Speaker: Jordan Ellenberg - Wisconsin

I will talk, pretty casually, about random walks, which I first learned about as part of my Harvard undergrad thesis in finite group theory, and which turn out to be...
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Periodicity

OPEN NEIGHBORHOOD

March 17, 2021      4:30 pm
Speaker: Matt Emerton - UChicago

The periodicity of certain functions has been a topic of study throughout the long history of mathematics. It was a topic of study for you in high school trigonometry, and...
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Save the Pilgrim!

OPEN NEIGHBORHOOD

March 3, 2021      4:30 pm
Speaker: Jenny Wilson - UMichigan

An evil mathematician has kidnapped the Harvard Pilgrim! To win his freedom, a group of undergrads must each find their name in a row of boxes. The odds look dire—but...
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Universes of evenly curved surfaces

OPEN NEIGHBORHOOD

February 17, 2021      4:30 pm
Speaker: Alex Wright - Michigan

We will begin by discussing hyperbolic geometry, and how it can be used to build "evenly curved" metrics on a donut with one point removed. We will then discuss Maryam...
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Mathematics from doodling

OPEN NEIGHBORHOOD

September 23, 2020      4:30 pm
Speaker: Ravi Vakil - Stanford

We'll start with a type of doodle most of you have done since you were little, and start wondering about it. We'll be led through a number of questions I've...
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