## Fields@Queen's Distinguished Lecture Series

### Thursday, March 7th, 2019

**Time:** 5:30 p.m. **Place:** Jeffery Hall 127

**Speaker:** Maria Chudnovsky (Princeton University)

**Title:** Parties, Doughnuts and Coloring: Some Problems in Graph Theory

**Abstract: ** A graph is a mathematical construct that represents information about connections between pairs of objects. As a result, graphs are widely used as a modeling tool in engineering, social sciences, and other fields. The paper written by Leonhard Euler in 1736 on the Seven Bridges of Konigsberg is often regarded as the starting point of graph theory; and we have come a long way since. This talk will survey a few classical problems in graph theory, and explore their relationship to the fields of research that are active today. In particular, we will discuss Ramsey theory, graph coloring, perfect graphs, as well as some more recent research directions.

**Prof. Chudnovsky (Princeton)** is a leading researcher in graph theory and combinatorics. For her joint work proving the strong perfect graph theorem, she was awarded the Ostrowski foundation research stipend in 2003 and the Fulkerson prize in 2009. In 2012, she was awarded the MacArthur Foundation Fellowship, and was an invited speaker at the 2014 ICM. Prof. Chudnovsky was also named one of the "brilliant ten" young scientists by the Popular Science magazine.