Modular automorphisms of the Drinfeld modular curves X0(n)
- Autores: Andreas Shweizer
- Localización: Collectanea mathematica, ISSN 0010-0757, Vol. 48, Fasc. 1-2, 1997, págs. 209-216
- Idioma: inglés
- Enlaces
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Resumen
For $\mathfrak{n}\in\mathbb{F}_q[T]$, we determine the group of modular automorphisms of the Drinfeld modular curve $X_0(\mathfrak{n})$ or equivalently, the normalizer of the Hecke congruence subgroup $\Gamma_0(\mathfrak{n})$ in $GL_2(\mathbb{F}_q((T^{-1})))$. Some applications to the strong Weil uniformization of elliptic curves over $\mathbb{F}_q(T)$ are given.
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