Local torsion primes and the class numbers associated to an elliptic curve over $\mathbb{Q}$

Toshiro Hiranouchi

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arXiv · 1703.08275

Local torsion primes and the class numbers associated to an elliptic curve over $\mathbb{Q}$

Toshiro Hiranouchi

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Abstract

Using the rank of the Mordell-Weil group $E(\mathbb{Q})$ of an elliptic curve $E$ over $\mathbb{Q}$, we give a lower bound of the class number of the number field $\mathbb{Q}(E[p^n])$ generated by $p^n$-division points of $E$ when the curve $E$ does not possess a $p$-adic point of order $p$: $E(\mathbb{Q}_p)[p] =0$.

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Toshiro Hiranouchi. 2017-03-24. Local torsion primes and the class numbers associated to an elliptic curve over $\mathbb{Q}$. https://arxiv.org/abs/1703.08275

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