A universal tropical Jacobian over the moduli space of tropical curves

Link identifier #identifier__43675-1Link identifier #identifier__193827-2
Martedi 28 Gennaio 2020 alle ore 11, presso  Largo San Murialdo 1 - Pal.C - Aula 211, il prof. Marco Pacini dell' Universidade Federal Fluminense (Rio de Janeiro) presenterà il seminario di Geometria dal titolo  "A universal tropical Jacobian over the moduli space of tropical curves".

Abstract:
We introduce polystable divisors on a tropical curve, which are the tropical analogue of polystable torsion-free rank-1 sheaves on a nodal curve. We show how to construct a universal tropical Jacobian by means of polystable divisors on tropical curves. This space can be seen as a tropical counterpart of Caporaso universal Picard scheme. This is a joint work with Abreu, Andria, and Taboada.