Shimura curves with many uniform dessins
Shimura curves with many uniform dessins
复制标题
志村曲线有许多统一的设计
DOI:
10.1007/s00209-011-0889-4
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发表时间:
2012
影响因子:
0.8
通讯作者:
J. Wolfart
中科院分区:
文献类型:
--
作者:
E. Girondo;D. Torres;J. Wolfart
A compact Riemann surface of genusg> 1 has different uniform dessins d’enfants of the same type if and only if its surface groupSis contained in different conjugate Fuchsian triangle groupsΔandαΔα−1. Tools and results in the study of these conjugates depend on whetherΔis an arithmetic triangle group or not. In the case whenΔis not arithmetic the possible conjugators are rare and easy to classify. In the arithmetic case, i.e. for Shimura curves, the problem is much more complicated, but the arithmetic of quaternion algebras controls the growth of the number of uniform dessins of given type with respect to the genus. This number grows at most asO(g1/3) and this bound is sharp. As a tool, localization of the quaternion algebras and the representation ofp-adic maximal orders as vertices of Serre–Bruhat–Tits trees turn out to be crucial. In low genera, the results shed a surprising new light on the uniformization of some classical curves like Klein’s quartic and other Macbeath–Hurwitz curves.
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影响因子:
0.7
作者:
E. Girondo;J. Wolfart
通讯作者:
J. Wolfart
影响因子:
0.5
作者:
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通讯作者:
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通讯作者:
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通讯作者:
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影响因子:
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作者:
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