Regular models of modular curves in prime level over

  • Bas Edixhoven

    Universiteit Leiden, Leiden, Netherlands
  • Pierre Parent

    Université de Bordeaux, Talence, France
Regular models of modular curves in prime level over $\mathbb{Z}_{p}^{\mathrm{ur}}$ cover
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Abstract

We give regular models for modular curves associated with (normalizer of) split and non-split Cartan subgroups of (for any prime). We then compute the group of connected components of the fiber at  of the Néron model of their Jacobians.

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Bas Edixhoven, Pierre Parent, Regular models of modular curves in prime level over . Doc. Math. 29 (2024), no. 5, pp. 1017–1058

DOI 10.4171/DM/974