Resumen de The birational geometry of Rg,2 and Prym-canonical divisorial strata
We prove that the moduli space of double covers ramified at two points Rg,2 is uniruled for 3 ≤ g ≤ 6 and of general type for g ≥ 16. Furthermore, we consider Prymcanonical divisorial strata in the moduli space CnRg parametrizing n-pointed Prym curves, and we compute their classes in PicQ(CnRg).
