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Timeline for Finite order Hecke characters

Current License: CC BY-SA 3.0

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Aug 1, 2017 at 17:08 comment added GH from MO @user49908: Note also that $\chi_\infty$ is only trivial if the associated primitive Dirichlet character is even. If the associated primitive Dirichlet character is odd, then $\chi_\infty$ is the sign character $\mathbb{R}^\times\to\{\pm 1\}$. You can find a concise account over number fields here (see pages 7-8): arxiv.org/abs/1402.1332
Aug 1, 2017 at 9:07 history edited Daniel Loughran CC BY-SA 3.0
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Aug 1, 2017 at 9:01 history answered Daniel Loughran CC BY-SA 3.0