Title: Chordal Completions - Semidefinite Programming and Minimum Completions Speaker: Dr Arvind Raghunathan Affiliation: Mitsubishi Electric Research Laboratories (MERL) Location: 217 Huxley Building Time: 14:00 - 15:00 Abstract. A graph is chordal if every cycle of length at least four contains a chord, that is, an edge connecting two nonconsecutive vertices of the cycle. Chordal... Read more »

Title: Largest Small n-Polygons: Numerical Results and Conjectured Optima Speaker: János D. Pintér Affiliation: Department of Industrial and Systems Engineering, Lehigh University Location: 218 Huxley Building Time: 14:00 - 15:00   Abstract. LSP(n), the largest small polygon with n vertices, is defined as the polygon of unit diameter that has maximal area A(n). Finding the configuration LSP(n) and the... Read more »