Speaker: John Voight (Sydney) Title: Ranks of elliptic curves Time & Place: 15.00-16.00, Thursday 9 October, SMRI Seminar Room Abstract: Elliptic curves lie at the intersection of many areas of mathematics and remain central to modern number theory. The rank of an elliptic curve over the rational numbers measures the size of its group of rational points; intuitively, it counts the number of independent points needed to generate all rational solutions up to torsion. A fundamental question, going back to Poincaré, remains unresolved: can the rank be arbitrarily large? In this talk, we present computations and data, a statistical model and heuristic framework to guide our expectations, and outliers that challenge these assumptions. This is joint work with Jennifer Park, Bjorn Poonen, and Melanie Matchett Wood.