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arXiv 0909.1359math.RTmath.NT
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GL(2,q)尖点表示的约化模p与对称幂

Reduction mod p of Cuspidal Representations of GL(2,q) and Symmetric Powers

Davide A. Reduzzi

摘要:

我们证明了GL(2,q)的尖点表示的积分模型的存在性,其模p的约化可以用J-P. Serre定义的F_{q} [X,Y]上的微分算子的上核来表示.这些积分模型来自于射影曲线XY^{q}-X^{q}Y-Z^{q+1}=0的晶体上同调。作为应用,我们可以扩展C. Khare和B. Edixhoven(2003)给出了作用在GL(2)的modp模形式空间上的Hasse不变算子的上同调模拟。

英文摘要:

We show the existence of integral models for cuspidal representations of GL(2,q), whose reduction modulo p can be identified with the cokernel of a differential operator on F_{q}[X,Y] defined by J-P. Serre. These integral models come from the crystalline cohomology of the projective curve XY^{q}-X^{q}Y-Z^{q+1}=0. As an application, we can extend a construction of C. Khare and B. Edixhoven (2003) giving a cohomological analogue of the Hasse invariant operator acting on spaces of modp modular forms for GL(2).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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