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 Probabilistic Method

BSC 105 Jaeho Choi, The Wave Equation

BSC 106 Anne Sher, Cauchy’s Corollary to Sylow’s First Theorem

10:05 – 10:15 Short Break

10:15-10:50am

BSC 104 Wendy Wiberg, The Mathematics of Tetris

BSC 105 Matthew Hayes, Global Solutions to the Camassa-Holm Equation

10:50-11:00am Short Break

11:00-11:35am

BSC 104 Eleanor Wachtell, A Global Problem: Projecting Spheres onto Flat Surfaces

BSC 105 Jenny Zheng, Modeling Car Traffic Flow: Burgers Equation

BSC 106 Dana Cohen, The Dynamics of a Multi-Strain Disease With Cross Immunity

11:40-1:00pm Pizza Lunch in the Math/Stat Library

1:00-1:35pm

BSC 103 Chinmayi Manjunath, Seven Bridges of Königsberg

BSC 104 Benjamin Lin, Why Count Von Count Should Study Abstract Algebra

BSC 105 James Pappas, Game Theory and the Brouwer Fixed-Point Theorem

BSC 106 Yoonsang Bae, Voting in Agreeable Societies

1:35-1:45pm Short Break

1:45-2:20pm

BSC 103 Ariana Ross, The Fold-and-Cut Problem

BSC 104 Stephanie Horan, Cayley Digraphs and Hamiltonian Paths

BSC 105 Stephen Tyson, Continued Fractions and the Twelve-Tone Musical Scale

BSC 106 Alex Gonye, The German Tank Problem

Congratulations to the entire Williams College Math Team and to Professors Ralph Morrison (the coach of the team) and Steven Miller (the co-organizer of the competition)!

Many thanks to the Middlebury folks for coming down to Williams, and to all 18 Williams students who participated! We look forward to the Fall 2017 Green Chicken contest, to be held at Middlebury College.

The 2016 Green Chicken questions are available here, with solutions here.

]]>A version of this article will also appear in the Fall issue of Williams Magazine.

]]>For the original video, please refer to this link that redirects to Prof. Morgan’s website.

Link to “Dancing the Bronfman”:

]]>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 and dining halls, assuming that’s where the majority of transmission would take place. Using their model, they determined that one infected individual could lead to an all-out epidemic infecting nearly 97% of the undergraduate population if no intervention policies were implemented. Knowing that the Williams administration would never let the entire campus get infected, they went to look at various interventions and determined that those that reduce contact with infected individuals, such as wearing face masks, would be able to quell the epidemic. In total in Math 307 there were nine groups investigating nine separate diseases with a wide range of questions such as: can the anti-vaccination movement lead to re-emergence of measles in the US? How would response to government intervention affect the Ebola epidemic in West Africa? Is vaccination or treatment the best way to help lions infected with canine disease temper virus? Which part of the immune response will have the most impact on levels of mono? How should the government prioritize treatment in countries with high levels of TB? What drives the different dynamics of two similar STDs – syphilis and gonorrhea? And can new vaccines for malaria and dengue really lead to elimination? If you’re interested in learning more, contact Prof Childs at lmc4@williams.edu.

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The Doddceum celebration for Frank Morgan included live music by Scott Daniel ’17 and Jack Hood ’18, a six-foot life-size cutout of the guest of honor, a slide show with pictures of Frank Morgan and Dodd Neighborhood in action, a throwback to the viral “Dancing the Parkway” video, a speech by Karen Huan ’16, Dodd Neighborhood director and proud Mathematics major, lots of great food and delectable desserts.

As per Doddceum tradition, we closed with haikus:

*The last Doddceum*

*Frank Morgan on his way out?*

*Oh boy, what is life?*

-Naomi Francois ’17

*We’ll miss a loved man*

*One so dear and integral,*

*One who leaves a rift.*

*Gentle, masterful*

*Lord of the pretty bubbles,*

*Floats away as one.*

-Ali Tafreshi ’15

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Kozelka Prize in statistics: Bryan Jones and Kelly Kung (awarded by Prof. De Veaux, Associate Chair for Statistics)

Morgan Prize in applied mathematics: Alex Meyer (awarded by Prof. Blackwood)

Wyskiel Prize in teaching: Mia Smith

Olga Beaver Prize in citizenship: Roger Vargas (awarded by Prof. Don Beaver)

Goldberg Prize for best colloquium: Alex Kling and Olivia Meyerson

Colloquium Attendance Prizes: Ashwin Narayan and Sarah Fleming

Witte Problem-solving Prize: Blake Mackall (awarded by Prof. Palsson)

1^{st} Benedict Prize for outstanding sophomore: Anna Neufield and Harry Zhang

2^{nd} Benedict Prize: Sumun Iyer, Andrew Scharf, and Weitao Zhu

The Rosenberg prize for outstanding senior will be announced later. Added May 19: It’s Greg Kehne, Peter McDonald, and Mia Smith!

Seniors offered advice, including:

Blake Mackall: “Hard problems are good because you’re learning.”

Sarah Wu: “Get a tutor.”

Ben Kaufman: “Don’t write “clearly” or “obviously” unless you’re really sure.”

Matt Tarduno: “Don’t use PowerPoint for colloquium.”

Joel Lee: “Use pass-fail.”

Alex Meyer: “Sometimes doing the really hard problem set is worth it; sometimes it isn’t.”

Greg Ferland: “Keep a diary.”

Peter McDonald: “Thesis.”

Roger Vargas: “Limit use of beverage wrench.”

Jon Yin: “Don’t let school get in the way of your education.”

Katie Bennett: “Math is a great place to make friends.”

Next year’s 200 majors (102 rising juniors and 98 rising seniors) is an all-time record and makes us the second largest department at Williams after Economics (213).

Prof. Morgan thanked departing faculty Profs. Don Beaver, Satyan Devadoss, Eyvi Palsson, and Lauren Childs and welcomed Prof. Susan Loepp as new chair on her 20th anniversary at Williams. Prof. Loepp thanked Prof. Morgan for his service, presented him with a picture of his department family, and distributed signature soap bubbles to all:

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