These questions are versions of unsolved problems in affine algebraic geometry which will be discussed in the talk.
**Speaker: Noson Yanofsky (Brooklyn College)**

Date: Tuesday February 26, 2013

Time: 12:30 pm - 1:30 pm

Location: 1141N

Title: An Invitation to Category Theory

Abstract: Category theory is a general study of structures. We will
describe many many basic examples of categories and their related
structures. This will help us see why category theory is a unifying
language in mathematics, theoretical computer science, and theoretical
physics. This talk is open to anyone.

**Speaker: Olympia Hadjiliadis (Brooklyn College)**

Date: Tuesday March 5, 2013

Time: 12:15 pm - 1:05 pm

Location: 0105N

Joint event with Stock Trading Club

Title: Quickest Detection and Algorithmic Trading

Abstract: My presentation is on the topic of statistical surveillance and quickest detection. We begin by providing an example of statistical quality control in an industrial production process. We define the out-of-control and in-control states of the process and describe how we attempt to distinguish them by using statistics based on the observations of the process. We also discuss further applications of the problem of statistical surveillance and quickest detection in finance, detection of enemy activity, the internet surveillance problem and signal processing. We draw attention to a specific statistic called the CUSUM. We construct CUSUM-based trend following trading algorithms and assess their performance on high frequency data for US treasury bonds and notes sold at auction. It is seen that during regimes of instability drawdown based algorithms result in a profit while in periods of stability, they do not. We finally draw the connection of drawdown algorithms and cumulative sum (CUSUM) on line detection statistics. This talk is open to anyone.

**Event: Math Clinic: The Math Club's tutoring event for lower division math courses**

Date: Tuesday May 14, 2013

Time: 12:30 pm - 2:30 pm

Location: 1127N

**Speaker: Julio César Urenda Castañeda (New Mexico State University)**

Date: Tuesday March 19, 2013

Time: 1:00 pm - 1:50 pm

Location: 0105N

Title: Perspectives on Graduate School

Abstract: I am a Mexican citizen residing in Juarez, Mexico, engaged in full time doctoral study at New Mexico State University. My thesis advisor is working in Brooklyn. I will discuss my educational background and the exigencies of doing doctoral research under these most unusual circumstances. If there is time and interest I will make some remarks about the nature of my thesis work on the embedding problem in affine algebraic geometry.

**Speaker: Olympia Hadjiliadis (Brooklyn College)
**

Date: Tuesday April 9, 2013

Time: 12:30 pm - 1:30 pm

Location: 0105N

Title: Speed of Reaction of the CUSUM

Abstract: In this event we will introduce a statistic known as the speed of reaction of the CUSUM. We will examine the information it conveys and how we may make use of this information in order to describe the trend of a time series. In the context of high-frequency data, we will also discuss its distributional properties and in particular its mean. We will then compare the speed of reaction statistic to a simple moving average statistic in making an inference about the mean of high-frequency observations.

**Speaker: Christian Benes (Brooklyn College)**

Date: Tuesday April 23, 2013

Time: 12:30 pm - 1:30 pm

Location: 1127N

Title: Random Walk and Related Lattice Models

Abstract: Many natural random phenomena are modeled on discrete lattice structures. One such model is random walk, which has been used for over a century as a model in biology, physics, and economics. In this talk, I will discuss gambling strategies for the game of roulette, explain why a drunken individual lost in Manhattan will always find a way home, and why butterflies have no such luck. If there is enough time, I will discuss other (surprisingly) related lattice models such as percolation and the Ising model.

**Speaker: Jeff Suzuki (Brooklyn College)**

Date: Tuesday May 2, 2013

Time: 12:30 pm - 1:30 pm

Location: 1127N

Title: Every Vote Counts, As Long As It's In the Right Zip Code: The Theory and Practice of Gerrymandering

Abstract: In the US and other democracies, voters in geographically defined districts choose a representative to serve in the legislature. But a sufficiently clever mapmaker could draw up a set of legislative districts to give one party a substantial advantage in the next election: this is a partisan gerrymander, and has been called the "pathology of democracy" by political scientists and social activists. The Supreme Court, claiming there is no "manageable standard" for measuring the extent of partisan gerrymandering, has given a green light to unlimited partisan gerrymandering. But to a mathematician, everything is measurable. We'll take a look at some of the proposals for measuring the extent of partisan gerrymandering; analyze the claim that partisan gerrymandering is a "self-limiting enterprise", and outline some areas of current research on the topic.

**Event: End of Semester Party & Math Club 2013-2014 Academic Year Election**

Date: Tuesday May 7, 2013

Time: 12:30 pm - 1:30 pm

Location: 1127N

**Event: Undergraduate Student Conference on Data Science**

Date: Tuesday May 14, 2013

Time: 12:30 pm - 2:30 pm

Location: 1127N