AbstractIn this talk, we will discuss spectral variety and related moduli spaces of Higgs pairs on surfaces. We will first introduce the geometry of moduli of Higgs pairs and the spectral varieties. Indeed, we will talk about the Noether-Lefschetz type problems and the Picard schemes of the spectral varieties. If time permits, the Picard group of generic (very general) spectral varieties and it...
Speaker Ken' ichi Ohshika is Professor at Gakushuin University and Professor Emeritus of Osaka University.He received PhD from University of Tokyo in 1989, and worked at Tokyo Institute of Technology, University of Tokyo, and Osaka University before joining Gakushuin University. His interest includes Kleinian groups, hyperbolic geometry, Teichmüller theory, and 3-manifolds. He is a recipient of...