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The Artin image of a weight one newform is the image of its associated Galois representation $\rho\colon \Gal(\overline\Q/\Q)\to \GL_2(\C)$.

The Artin image is a finite subgroup of $\GL_2(\C)$ whose cardinality is equal to the degree of the Artin field.

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• Review status: reviewed
• Last edited by John Voight on 2020-02-15 13:32:18
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