The **torsion order** of a finitely-generated abelian group such as the Mordell-Weil group of the Jacobian of a curve over a number field is the cardinality of its torsion subgroup. The **torsion primes** are the primes that divide the torsion order, equivalently, the primes $\ell$ for which the Jacobian has a rational point of order $\ell$.

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- Review status: reviewed
- Last edited by Andrew Sutherland on 2023-07-23 12:02:27

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- 2023-07-23 12:02:27 by Andrew Sutherland (Reviewed)
- 2022-12-23 18:18:32 by Barinder Banwait
- 2020-10-25 07:35:34 by Andrew Sutherland (Reviewed)
- 2018-05-24 17:04:27 by John Cremona (Reviewed)

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