26/5, UFF. Campus do Gragoatá, Bloco H, sala 407 (como chegar)
10:3011:30 
Maral Mostafazadehfard (IMPA),
Anticanonical cover of secant varieties of a rational normal curve.
Resumo. (see link)
 12:0013:00 
Angel Carocca (Universidad de la Frontera, Chile),
A generalization of the Recillas's construction
Resumo. The well known Recillas trigonal construction shows that Prym varieties above trigonal curves are Jacobian varieties of tetragonal curves and, conversely, that all tetragonal Jacobians are Pryms.
In this work we show that a similar result applies in a more general situation: Let p be a prime number. Then, given an unramified double cover X_1 of a pgonal curve Z with total ramification, there exist a 2^{p1}gonal curve Y and unramified double covers X_2, ..., X_k of Z, with k = \dfrac{2^{p1}1}{p} for p \geq 3 and k=2 for p=2, such that JY is isomorphic to the product of the P(X_i/Z)}.

