On torsion of superelliptic Jacobians

Abstract

We give a structure theorem for the $m$-torsion of the Jacobian of a general superelliptic curve $y^m=F(x)$. We study existence of torsion on curves of the form $y^q=x^p-x+a$ over finite fields of characteristic $p$. We apply those results to bound from below the Mordell-Weil ranks of Jacobians of certain superelliptic curves over $\mathbb{Q}$.

arXiv comment11 pages

References in corpus (1)

• L-functions with large analytic rank and abelian varieties with large algebraic rank over function fields