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arXiv 0710.3569math.NT
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关于Drinfeld模曲线的Eisenstein理想

On the Eisenstein ideal of Drinfeld modular curves

Ambrus Pal

摘要:

令$\goth E(\goth p)$表示Hecke代数$\Bbb T(\goth p)$中的Eisenstein理想,其中$\goth E(\goth p)$是一般特征的具有Hecke水平$\goth p$ -结构的$\Bbb F_q[T]$上的秩为2的Drinfeld模的Drinfeld模曲线$X_0(\goth p)$的参数化,其中$\goth p\triangleleft\Bbb F_q[T]$是非零素理想.证明了域$\Bbb F_q$的特征$p$不整除商$\Bbb T(\goth p)/\goth E(\goth p)$的阶,且Eisenstein理想$\goth E(\goth p)$是局部主理想.

英文摘要:

Let $\goth E(\goth p)$ denote the Eisenstein ideal in the Hecke algebra $\Bbb T(\goth p)$ of the Drinfeld modular curve $X_0(\goth p)$ parameterizing Drinfeld modules of rank two over $\Bbb F_q[T]$ of general characteristic with Hecke level $\goth p$-structure, where $\goth p\triangleleft\Bbb F_q[T]$ is a non-zero prime ideal. We prove that the characteristic $p$ of the field $\Bbb F_q$ does not divide the order of the quotient $\Bbb T(\goth p)/\goth E(\goth p)$ and the Eisenstein ideal $\goth E(\goth p)$ is locally principal.

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