Date | May 01, 2014 |
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Speaker | 유화종 |

Dept. | University of Luxembourg |

Room | 129-310 |

Time | 14:00-15:00 |

In this talk, we discuss the cuspidal group of $J_0(pq)$ and the rational torsion points of $J_0(pq)$.

We prove the following statement. If a prime $ell$ does not divide 6pq*gcd(p-1, q-1)*gcd(p-1,q+1)*(q-1,p+1), then the $ell$-primary part of the rational torsion subgroup of $J_0(pq)$ is isomorphic to the $ell$-primary subgroup of the cuspidal group.

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