Robert Ghrist (University of Pennsylvania) will present "Sheaves and the Global Topology of Data -- Lecture III." The Trjitzinsky Memorial Lectures will be held at 4 p.m. on March 6, 7, 8, 2012. Abstract: This lecture series concerns Applied Mathematics -- the taming and tuning of mathematical structures to the service of problems in the sciences. The Mathematics to be harnessed comes from algebraic topology -- specifically, sheaf theory, the study of local-to-global data. The applications to be surveyed are in the engineering sciences, but are not fundamentally restricted to such. Beginning with a gentle introduction to algebraic topology and its modern applications, the series will focus on sheaves and their recent utility in sensing, coding, optimization, and inference. No prior exposure to sheaves required.