Title: Geometry of triple linking
Abstract: Gauss produced a formula for the linking number of a 2-component link in Euclidean space. This formula involves an integral with the property that the integrand is geometrically natural, i.e. it remains unchanged under rigid motions of the link. I will describe joint work producing an analogous integral formula for the Milnor triple linking number of a three-component link in Euclidean space, with the property that the integrand is again geometrically natural.