Vol. 10, No. 4, 2016
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The Prym map of degree-7 cyclic coverings

Herbert Lange and Angela Ortega
Vol. 10 (2016), No. 4, 771–801
DOI: 10.2140/ant.2016.10.771
Abstract

We study the Prym map for degree-7 étale cyclic coverings over a curve of genus 2. We extend this map to a proper map on a partial compactification of the moduli space and prove that the Prym map is generically finite onto its image of degree 10.

Keywords
Prym variety, Prym map
Mathematical Subject Classification 2010
Primary: 14H40
Secondary: 14H30
Milestones
Received: 6 February 2015
Revised: 11 March 2016
Accepted: 26 April 2016
Published: 20 June 2016
Authors
Herbert Lange
Department Mathematik
Universität Erlangen
Cauerstr. 11
D-91058 Erlangen
Germany
Angela Ortega
Institut für Mathematik
Humboldt Universität zu Berlin
Unter den Linden 6
D-10099 Berlin
Germany