Counting Curves: Tales from the Enumerative Crypt

Susan Colley
Department of Mathematics, Oberlin College

Abstract: I will talk about the Steiner problem of five conics: to determine how many conics are simultaneously tangent to five others. I will provide some of the history surrounding this problem and an idea of some of the ingredients needed to solve it. Finally, I will turn to modern times and briefly sketch joint work with Gary Kennedy (Ohio State) and Lars Ernström (Ericsson) that uses mathematical techniques inspired by ideas in theoretical string theory to address some analogous questions about "higher-order" contact of plane curves.