Bryan–Oberdieck–Pandharipande–Yin genericity conjecture for hyperelliptic curves on Abelian surfaces

Let BB be a polarized Abelian surface, let CC be a hyperelliptic curve, and let f:CBf:C\to B be a degree-11 morphism with image Cˉ\bar{C} such that the polarization [Cˉ][\bar{C}] is generic. Let ι:CC\iota:C\to C be the hyperelliptic involution. Bryan–Oberdieck–Pandharipande–Yin conjecture. If BB is generic among polarized Abelian surfaces, then the differential of ff is injective at the Weierstrass points of CC, and there is no non-Weierstrass point pp such that f(p)=f(ι(p))f(p)=f(\iota(p)). This concerns the intersection behaviour of curves on Kummer surfaces and a related problem about hyperelliptic curves on Abelian surfaces; the source provides no resolution status.

Sources & referencesView supporting material

Primary source

Xavier Roulleau and Alessandra Sarti, “Construction of Nikulin configurations on some Kummer surfaces and applications”, arXiv:1711.05968 (2018).

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