### Every other Thursday, 4-6 p.m., SC 309a

Talk begins at 4, reception begins at 5, snacks provided.

### February 8

**Speaker:** Melody Chan (Brown)
**Title:** Counting Trees
**Abstract:** I will talk about counting trees, in the sense of graph theory---although this can be adjusted to the demands of the audience. No prerequisites.

### February 15

**Speaker:** Rohini Ramadas (Harvard)
**Title:** Dynamics of polynomials and rational functions
**Abstract:** I will introduce polynomials as dynamical systems on the set of complex numbers and rational functions as dynamical systems on the Riemann Sphere (the complex numbers plus a point at infinity). I will discuss how the study of the dynamics of polynomials and rational functions leads to the study of higher dimensional dynamical systems.
A famous example: If 'c' is a complex constant then the polynomial 'z goes to z^2+c' is a map from set of complex numbers to itself. How do the dynamics of this map depend on the complex number 'c'?
This will be a very introductory talk.

### March 1

**Speaker:** Wes Cain (Harvard)
**Title:** TBA
**Abstract:** TBA

### March 23 (Note the unusual day!)

**Speaker:** Kathryn Mann (Brown)
**Title:** TBA
**Abstract:** TBA

### April 5

**Speaker:** Karen Edwards (Harvard)
**Title:** TBA
**Abstract:** TBA

### April 19

**Speaker:** Heather Macbeth (MIT)
**Title:** TBA
**Abstract:** TBA

**Mailing list:** You can subscribe to the seminar mailing list here.

**Organizers:** Ana Balibanu (ana@math.harvard.edu) and Alison Miller (abmiller@math.harvard.edu)