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arXiv · 2505.22470

Infinitely many hyperelliptic curves of small genus and small fixed rank, and of any genus and rank two

Stevan Gajović·Sun Woo Park
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Abstract

We prove that for any number field $K$ and any fixed genus $g \geq 2$, there are infinitely many non-isomorphic hyperelliptic curves of genus $g$ over $K$ whose Jacobians have rank over $K$ equal to each of 0, 1, or 2. As an example of our method, over $\mathbb{Q}$, we prove that there exist infinitely many non-isomorphic hyperelliptic curves of genus two, whose Jacobians have rank equal to a fixed number between $1$ and $11$, genus three and four curves with rank between $1$ and $4$, and genus five and six with rank between $1$ and $3$.

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Stevan Gajović, Sun Woo Park. 2025-05-28. Infinitely many hyperelliptic curves of small genus and small fixed rank, and of any genus and rank two. https://arxiv.org/abs/2505.22470

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