# Mathematics

## Colloquium Fest 2017

The 2017 Mathematics Colloquium Fest will be on Tuesday January 24, from 9:30am – 2:20pm in Bonfman 103-106. Sixteen Mathematics seniors give colloquium talks in three or four parallel sessions, with a pizza lunch break. Here is the detailed schedule of the 2017 Colloquium Fest: 9:30 – 10:05 BSC 104 Ben Solis-Cohen, Ramsey Theory and the

## Williams College defends the Green Chicken!

The 39th Annual Green Chicken math contest was held at Williams College on Saturday November 12, with Williams and Middlebury students taking on challenging math conundrums to compete for the beloved Green Chicken trophy. Williams successfully defended the Green Chicken, with Elijah Fromm ’17, Ian Banta ’19, and Abe Leite ’20 valiantly leading Williams’ team! Congratulations

## [email protected] and Hispanics in the Mathematical Sciences

September 15-October 15 is National Hispanic Heritage Month, a time when we recognize the accomplishments and contributions of [email protected] and Hispanics in the United States while celebrating the culture and heritage. Every day during this month the website www.lathisms.org – standing for [email protected] and Hispanics in the Mathematical Sciences – will showcase a Latin@ or Hispanic mathematician

## The Mathematics of Coral Reef Health

Assistant Professor Julie Blackwood, together with her summer research students and collaborators from Bennington College use mathematics to investigate the deterioration of coral reefs in the Cayman Islands and possible solutions to this problem, including the reintroduction of sea urchins. More information about their work can be found in the following feature story recently published

## Blended Upper Level Math Classes

In September 2016, a team of mathematics faculty, technologists and instructional designers from six leading liberal arts colleges (LACOL member schools Amherst, Haverford, Pomona, Swarthmore, Vassar and Williams) are launching a new collaboration to explore blended course sharing for select topics in advanced mathematics. The goal of the project is to experiment with models for

## SARS at Williams – let’s hope not.

by Prof. Lauren Childs Imagine a SARS outbreak in quaint Williamstown – that’s exactly what Varun Bhadkamkar ’17, Anthony Brooks ’16, Jack Ferguson ’17, Connor Mulhall ’17, and Annie Sher ’17 did in their Math 307 final project. The SARS group built a network model of the Williams College undergraduate population, grouping individuals by dorms

## The Banach-Mazur Game by John Damstra

This spring, I presented my senior colloquium on a topological game called the Banach-Mazur Game. This game was formulated by Stanislaw Mazur in 1935. It is the earliest example of an infinite game with perfect information. The game proceeds as follows. Continue reading. . John Damstra is a senior mathematics major at Williams College.

## Interview with Eyvindur Ari Palsson

Our very own Professor Palsson was featured on the show Meet & Potatoes on WilliNet, the community television for Williamstown. During the show a number of topics were covered including several mathematical in nature. Professor Palsson gave a shout out to the weekly Math Puzzle Dinners – come try them on Wednesday evenings at 5:30 PM

## Sphere Packing in Dimensions 8 and 24

In a remarkable new paper, Maryna Viazovska has put forth a proof of a most efficient way to pack unit spheres in dimension 8. In a follow-up paper, Henry Cohn, Abhinav Kumar, Stephen D. Miller, Danylo Radchenko, and Viazovska have a similar result in dimension 24. Dimensions 8 and 24 are especially interesting and easy cases, because there are very

## Learning the Cube

I’ve had a lot of fun with some cubing events recently in Williamstown. The first was an official cube event organized by local student Ric Donati. For results see https://www.worldcubeassociation.org/results/c.php?top3=Top+3&competitionId=WilliamsWinter2016 http://cubecomps.com/live.php?cid=1377 The second was earlier today, a cube workshop run by myself and my son, Cameron, at the Milne Library in town. We hope to

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