Counting Hyperelliptic curves on Abelian surfaces with Quasi-modular forms

preprint2012arXivOpen access

Abstract

In this paper we produce a generating function for the number of hyperelliptic curves (up to translation) on a polarized Abelian surfaces using the crepant resolution conjecture and the Yau-Zaslow formula. We present a formula to compute these in terms of MacMahon's generalized sum-of-divisors functions, and prove that they are quasi-modular forms.

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