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arXiv · 2607.15451

Indecomposable translates and degree-$d$ points

Alexander Galarraga
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Abstract

A curve over a number field has infinitely many degree-$d$ points if and only if there exists a degree-$d$ $\mathbb{P}^1$- or $AV$-parametrized point. We show that a $\mathbb{P}^1$-isolated $AV$-parametrized point arises only from an abelian translate satisfying a certain property, which we term ``indecomposable". We apply our results to a family of genus-7 curves for which we can show that every effective abelian translate in degree 5 is decomposable over the algebraic closure, giving a negative answer to a question of Viray and Vogt.

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Alexander Galarraga. 2026-07-16. Indecomposable translates and degree-$d$ points. https://arxiv.org/abs/2607.15451

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