Covers of an Elliptic Curve E and Curves in ExP1

We describe the hyperplane sections of the Severi variety of curves in ExP1 in a similar fashion to Caporaso—Harris’ seminal work. From this description we almost get a recursive formula for the Severi degrees—we get the terms, but not the coefficients. As an application, we determine the compon...

Full description

Bibliographic Details
Main Author: Tavares Bujokas, Gabriel
Format: Others
Language:en
Published: Harvard University 2015
Subjects:
Online Access:http://nrs.harvard.edu/urn-3:HUL.InstRepos:17467298
Description
Summary:We describe the hyperplane sections of the Severi variety of curves in ExP1 in a similar fashion to Caporaso—Harris’ seminal work. From this description we almost get a recursive formula for the Severi degrees—we get the terms, but not the coefficients. As an application, we determine the components of the Hurwitz space of simply branched covers of a genus one curve. In return, we use this characterization to describe the components of the Severi variety of curves in E × P1, in a restricted range of degrees. === Mathematics