On dominant rational maps from a very general complete intersection surface in P^4

Keywords: Dominant rational maps, very general complete intersection surfaces

Abstract

Let S be a very general complete intersection surface of multidegree (d_1,d_2) in P^4. The following problem arises: determine the couples (d_1,d_2) such that the surface S does not have any "non-evident" rational map to other surfaces. By non-evident rational map, we mean non-birational dominant map whose target space is not rational. We give a partial solution, presenting a class of multidegrees (d_1,d_2) which satisfy the above condition.
Published
2017-11-15
Section
Articoli