%0 Journal Article
%T Genus 2 curve configurations on Fano surfaces
%A Xavier Roulleau
%J Mathematics
%D 2010
%I arXiv
%X We study the configurations of genus 2 curves on the Fano surfaces of cubic threefolds. We establish a link between some involutive automorphisms acting on such a surface S and genus 2 curves on S. We give a partial classification of the Fano surfaces according to the automorphism group generated by these involutions and determine the configurations of their genus 2 curves. We study the Fano surface of the Klein cubic threefold for which the 55 genus 2 curves generate a rank 25=h^{1,1} index 2 subgroup of the N\'eron-Severi group.
%U http://arxiv.org/abs/1002.4467v1