On Rademacher's conjecture: congruence subgroups of genus zero of the modular group
On Rademacher's conjecture: congruence subgroups of genus zero of the modular group
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论拉德马赫猜想:模群零属的同余子群
DOI:
10.1016/j.jalgebra.2004.02.025
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发表时间:
2004
影响因子:
0.9
通讯作者:
Yifan Yang
中科院分区:
文献类型:
--
作者:
K. Chua;M. Lang;Yifan Yang
We list all genus zero congruence subgroups of PSL2( Z ) . There are altogether 132 of them (up to conjugation in PSL2( Z ) ). Geometrical invariants (genus, v2, v3, number of cusps, index in PSL2( Z ) ), fundamental polygons, Farey symbol, and independent generators of all such groups are determined. Generators of the function fields associated to such groups are also determined (http://www.math.nus.edu.sg/~matlml/).