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math.AG2011
Prym varieties of double coverings of elliptic curves
Valeria Ornella Marcucci, Juan Carlos Naranjo
We prove the generic injectivity of the Prym map, sending a double covering of an elliptic curve ramified at r>4 points to its polarized Prym variety. For r=6 the map is birational…
math.AG2011
The Fano normal function
A. Collino, J. C. Naranjo, G. P. Pirola
The Fano surface of lines in the cubic threefold is naturally embedded in the intermediate Jacobian , we call "Fano cycle" the difference , this is homologous…