Mathematics Colloquia and Seminars
McMullen's formulas for Ehrhart coefficientsAlgebra & Discrete Mathematics
|Speaker:||Maren Ring, University of Rostock|
|Start time:||Mon, Apr 16 2018, 3:10PM|
The Ehrhart polynomial counts the number of lattice points in dilates of a polytope and gives us a useful connection between volumes and discrete points. Determining the coefficients of this polynomial can be done via so-called McMullen's formulas (aka local formulas), which give the i-th coefficient as a weighted sum of the volumes of the i-dimensional faces of the polytope.
Based on choices of lattice tiles we construct a new local formula that provides us with additional knowledge about Ehrhart coefficients and can be used for the exploitation of polyhedral symmetries. This is joint work with A. Schürmann.