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Given two Dirichlet characters $\chi$ and $\psi$ modulo $q$, the Jacobi sum associated to these characters is given by $$J(\chi,\psi) = \sum_{r \,\in\, \mathbb{Z}/q\mathbb{Z}} \chi(r)\, \psi(1-r).$$

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• Review status: reviewed
• Last edited by Kiran S. Kedlaya on 2018-07-04 19:40:30
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