Automorphisms of the Modular Curve

Automorphisms of the Modular Curve
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模曲线的自同构

DOI:
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发表时间:
2005
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通讯作者:
R. Guralnick
R. Guralnick
中科院分区:
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文献类型:
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作者:
Peter R. Bending;A. Camina;R. Guralnick

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设p是质数。设X为特征为l (l≠p)的模曲线X(p)的约简。除了已知特征l=3 (p= 7,11)的两个情况外,我们证明了X的完全自同构群是PSL(2,p)。
Let p>5 be a prime. Let X be the reduction of the modular curve X(p) in characteristic l (with l≠p). Aside from two known cases in characteristic l=3 (with p=7, 11), we show that the full automorphism group of X is PSL(2,p).