Department Events

### Lectures on Elections and Fair Division

The first lecture is titled, "Is There a Better Way to Elect a President?" and will be presented at 7:00 PM on Tuesday, October 7, in the Geneva Room. This talk is based on Professor Brams' recent article of the same name in which he describes the properties of approval voting, where voters can approve as many candidates as they like in a multicandidate election. This system has been adopted by the Mathematical Association of America (MAA), the American Mathematic Society (AMS) and several other professional societies. Brams argues that this system is a much simpler and more practical option than the plurality U.S. voting system. In addition, he will discuss other systems such as ranking systems and grading systems which have been widely discussed in mathematical fields.

The second lecture is titled, "The Win-Win Solution: Guaranteeing Fair Shares to Everybody" and will be presented in Room Napier 201 at 4:00 PM on Wednesday, October 3. Professor Brams describes this talk as follows: Cutting up a cake, dividing up the property in an estate, determining the border in an international dispute--such problems of fair division are ubiquitous. Beginning with "I cut, you choose," I will illustrate how rigorous methods can be applied to the analysis of a variety of procedures for allocating goods (or "bads" like chores), or for deciding who wins on what issues in a dispute. In particular, I will focus on procedures which provide "envy-free" allocations, in which everybody thinks he or she received the largest portion and hence does not envy anybody else.

Posted 26 September 2012

### Movie Night: The Proof

For over 350 years, some of the greatest minds of science struggled to prove what was known as Fermat's Last Theorem -- the idea that a certain simple equation had no solutions. Now hear from the man who spent seven years of his life cracking the problem, read the intriguing story of an 18th century woman mathematician who hid her identity in order to work on Fermat's Last Theorem, and demonstrate that a related equation, the Pythagorean Theorem, is true.

Andrew Wiles devoted much of his career to proving Fermat's Last Theorem, a challenge that perplexed the best minds in mathematics for 300 years. In 1993, he made front-page headlines when he announced a proof of the problem, but this was not the end of the story; an error in his calculation jeopardized his life's work. In this interview, Wiles recounts how he came to terms with the mistake, and eventually went on to achieve his life's ambition.

The department will show the movie on Thursday, December 1st at 7:30pm in Albright Auditorium. Refreshments will be provided. Bring your friends!

Posted 23 November 2011

### If Copernicus and Kepler Had Computers: An Introduction to Model-Building and Computational Science

Posted 11 November 2011

### A Mathematical Model of T Cell Exhaustion Caused by HBV/HDV

Posted 4 November 2011

### Mathematical Models of Bone Biochemistry with Applications to the Treatment of Osteoporosis

On Wednesday, October 26th at 4:30pm in Napier 201 the Department of Mathematics and Computer Science will host Dr. David Ross of Rochester Institute of Technology. Dr. Ross is a SIAM Visiting Lecturer and will be giving a talk entitled: "Mathematical Models of Bone Biochemistry with Applications to the Treatment of Osteoporosis".

In humans and other mammals the skeleton is continuously remodeled, that is, dissolved and rebuilt; human bone has an annual turnover rate of about 10 percent. Understanding the biochemical processes of bone remodeling is important to the development of treatments for the disease osteoporosis, which is characterized by low bone mass, and which puts those who have it at risk of bone fractures. Osteoporosis results from an imbalance in the biochemical remodeling process, when resorption-the chemical breakdown of old bone-outstrips the formation of new bone. The most common cause of osteoporosis is age-related hormone change, the reduction of estrogen in women after menopause, and the reduction of testosterone in older men. Roughly 20 percent of women over the age of 50 have osteoporosis.

In this talk Professor Ross will discuss dynamical system models of bone remodeling that are used to simulate bone remodeling and to study the effects of various treatments for the condition. He will focus on the ways in which the dynamical systems capture the important biochemical features of the remodeling process, and he will discuss modeling methodology and the ways in which models are used. (Refreshments will be served beforehand.)

Posted 20 October 2011

### Two-faced: The Cantor set and notions of size

Posted 23 September 2011

### Save the Date!

Posted 12 March 2011

### Colloquium: VIREOS: An Integrated, Bottom-Up, Educational Operating Systems Project with FPGA Support

Posted 1 March 2011

### Colloquium: Discovering the missing piece: 4-connected, 4-regular, claw-free graphs of odd order

Posted 1 March 2011

### Colloquium: The Wide World of Mathematical Biology

Posted 1 March 2011