The Department of Mathematics and Statistics of Villanova University presents a colloquium by Dr. Elizabeth Beazley Haverford College The Rim Hook Rule: Enumerative Geometry via Combinatorics Friday, September 13, 2013 Mendel Hall, room 154 3:15 pm (refreshments at 3:00 pm) Abstract: The theory of quantum cohomology was initially developed in the early 1990s by physicists working in the field of superstring theory. Mathematicians then discovered applications to enumerative algebraic geometry, counting the number of rational curves of a given degree satisfying certain incidence conditions, but the impact now extends into many other aspects of algebraic geometry, combinatorics, representation theory, number theory, and even back to physics. In this talk, we will explain a "rim hook rule" which provides an efficient way to compute products in the quantum cohomology of the Grassmannian of k planes in complex n-space. This talk will be very concrete and completely self-contained, assuming only a background in basic linear algebra.