Normalizers of the congruence subgroups of the Hecke groups G(4) and G(6)

Authors
Lang, ML
Citation
Ml. Lang, Normalizers of the congruence subgroups of the Hecke groups G(4) and G(6), J NUMBER TH, 90(1), 2001, pp. 31-43
Citations number
4
Categorie Soggetti
Mathematics
Journal title
JOURNAL OF NUMBER THEORY
ISSN journal
0022314X → ACNP
Volume
90
Issue
1
Year of publication
2001
Pages
31 - 43
Database
ISI
SICI code
0022-314X(200109)90:1<31:NOTCSO>2.0.ZU;2-I
Abstract
Normalizers of Gamma (0)(m) + w(2) and Gamma0(m) + w(3) in PSL2(R) Lire det ermined. The determination of such normalizers enables us to determine the normalizers (in PSL2(R)) of the congruence subgroups G(4)(0)(A) and G(6)(0) (A) of the Hecke groups G(4) and G(6). (C) 2001 Academic Press.