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Displaying similar documents to “The modified diagonal cycle on the triple product of a pointed curve”

Minimal resolution and stable reduction of X 0 ( N )

Bas Edixhoven (1990)

Annales de l'institut Fourier

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Let N 1 be an integer. Let X 0 ( N ) be the modular curve over Z , as constructed by Katz and Mazur. The minimal resolution of X 0 ( N ) over Z [ 1 / 6 ] is computed. Let p 5 be a prime, such that N = p 2 M , with M prime to p . Let n = ( p 2 - 1 ) / 2 . It is shown that X 0 ( N ) has stable reduction at p over Q [ p n ] , and the fibre at p of the stable model is computed.