Algebra & Number Theory

The Prym map of degree-7 cyclic coverings

Herbert Lange and Angela Ortega

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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.

Article information

Algebra Number Theory, Volume 10, Number 4 (2016), 771-801.

Received: 6 February 2015
Revised: 11 March 2016
Accepted: 26 April 2016
First available in Project Euclid: 16 November 2017

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 14H40: Jacobians, Prym varieties [See also 32G20]
Secondary: 14H30: Coverings, fundamental group [See also 14E20, 14F35]

Prym variety Prym map


Lange, Herbert; Ortega, Angela. The Prym map of degree-7 cyclic coverings. Algebra Number Theory 10 (2016), no. 4, 771--801. doi:10.2140/ant.2016.10.771.

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