September 15, 4:10-5 pm	Kannan Soundararajan	Sums of squares
September 22, 4:10-5 pm	Kannan Soundararajan	The fifteen theorem
September 29, 4:10-5 pm	Brian Conrad	Cross-ratio and conics
October 6, 4:10-5 pm	Juha Heinonen	What are topological manifolds made of?
October 13, 4:10-5 pm	Stephen DeBacker	Hexed by math: the Brouwer fixed-point theorem
October 20, 4:10-5 pm	Harm Derksen	Archimedean solids
October 27, 4:10-5 pm	David Promislow	A stopping problem
November 3, 4:10-5 pm	Dan Burns	The occasionally dishonest casino
November 10, 4:10-5 pm	Sam Payne	Tropical geometry
November 17, 4:10-5 pm	Patrick Nelson	Can mathematics cure AIDS?
November 24, 4:10-5 pm	No meeting	Thanksgiving
December 1, 4:10-5 pm	Matt DeLong	Elliptic curves: from taxis to Internet security
December 8, 4:10-5 pm	Joel Smoller	Gravitation and Cosmology