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The $\SL_2$-level of a modular curve $X_H$ is the level of the congruence subgroup $\Gamma_H:=H\cap\SL_2(\Z)$. The $\SL_2$-level divides but need not equal the level of $H$.

Knowl status:
  • Review status: beta
  • Last edited by Andrew Sutherland on 2022-03-24 22:50:31
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Not referenced anywhere at the moment.

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