Birational characterization of products of curves of genus 2
Christopher D. Hacon, Rita Pardini
math.AGarXiv:math/0402296
Abstract
Let X be a variety of maximal Albanese dimension. In this paper we prove that if χ(ωX)=1 then the q(X)<=2dim X and if q(X)=2dim X, then X is birational to a product of curves of genus 2.
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