====== Caroline Klivans (Brown) ====== ====== On the Connectivity of Three-Dimensional Tilings ====== ===== Abstract for the Combinatorics and Geometry/Topology Seminars 2017 March 28 ===== I will discuss domino tilings of three-dimensional manifolds. I will focus on the connected components of the space of tilings of such manifolds under local moves. Using topological techniques, I introduce two parameters of tilings: the flux and the twist. The main result characterizes, in terms of these two parameters, when two tilings are connected by local moves. I will not assume any familiarity with the theory of tilings. ----