The fibers of the ramified Prym map
We study the ramified Prym map $\mathscr{P}_{g, r} \rightarrow \mathscr{A}_{g-1+\frac{r}{2}}^\delta$ which assigns to a ramified double cover of a smooth irreducible curve of genus $g$ ramified in $r$ points the Prym variety of the covering. We focus on the six cases where the dimension of the sourc...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/191907 |
| Acceso en línea: | https://hdl.handle.net/2445/191907 |
| Access Level: | acceso abierto |
| Palabra clave: | Corbes algebraiques Geometria algebraica Algebraic curves Algebraic geometry |
| Sumario: | We study the ramified Prym map $\mathscr{P}_{g, r} \rightarrow \mathscr{A}_{g-1+\frac{r}{2}}^\delta$ which assigns to a ramified double cover of a smooth irreducible curve of genus $g$ ramified in $r$ points the Prym variety of the covering. We focus on the six cases where the dimension of the source is strictly greater than the dimension of the target giving a geometric description of the generic fiber. We also give an explicit example of a totally geodesic curve which is an irreducible component of a fiber of the Prym map $\mathscr{P}_{1,2}$. |
|---|