Title: Shafarevich-Tate groups of Jacobians of Fermat Curves: A Survey of Old and New Results

Speaker: William McCallum, University of Arizona

Abstract:
The Selmer group of the Jacobian of a Fermat curve tends to be large for its genus, which raises the question of how it is distributed between the Mordell-Weil group of the Jacobian and its Shafarevich-Tate group. We survey results from the last 20 years, including joint work with Pavlos Tzermias, Romyar Sharifi, and Ben Levitt, which throws some light on this issue. However, we will raise more questions than we answer.