Journal of Algebraic Geometry

Journal of Algebraic Geometry

Online ISSN 1534-7486; Print ISSN 1056-3911

   
 

 

Hyperplane sections of abelian surfaces


Authors: Elisabetta Colombo, Paola Frediani and Giuseppe Pareschi
Journal: J. Algebraic Geom. 21 (2012), 183-200
DOI: https://doi.org/10.1090/S1056-3911-2011-00556-0
Published electronically: April 25, 2011
MathSciNet review: 2846682
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Abstract: By a theorem of Wahl, the canonically embedded curves which are hyperplane section of K3 surfaces are distinguished by the non-surjectivity of their Wahl map. In this paper we address the problem of distinguishing hyperplane sections of abelian surfaces. The somewhat surprising result is that the Wahl map of such curves is (tendentially) surjective, but their second Wahl map has corank at least 2 (in fact a more precise result is proved).


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Elisabetta Colombo
Affiliation: Dipartimento di Matematica, Università di Milano, via Saldini 50, I-20133, Milano, Italy
Email: elisabetta.colombo@unimi.it

Paola Frediani
Affiliation: Dipartimento di Matematica, Università di Pavia, via Ferrata 1, I-27100 Pavia, Italy
Email: paola.frediani@unipv.it

Giuseppe Pareschi
Affiliation: Dipartimento di Matematica, Università di Roma, Tor Vergata, V.le della Ricerca Scientifica, I-00133 Roma, Italy
Email: pareschi@mat.uniroma2.it

DOI: https://doi.org/10.1090/S1056-3911-2011-00556-0
Received by editor(s): May 7, 2009
Received by editor(s) in revised form: November 9, 2009
Published electronically: April 25, 2011
Additional Notes: Partially supported by PRIN 2007 MIUR: “Spazi dei moduli e teoria di Lie” and PRIN 2006 of MIUR “Geometry on algebraic varieties”.

Journal of Algebraic Geometry
The Journal of Algebraic Geometry
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