Please use this identifier to cite or link to this item: https://doi.org/10.1006/jabr.2001.8756
Title: The signature of Γ+ 0(n)
Authors: Lang, M.-L. 
Keywords: Congruence subgroups
Signature
Issue Date: 1-Jul-2001
Citation: Lang, M.-L. (2001-07-01). The signature of Γ+ 0(n). Journal of Algebra 241 (1) : 146-185. ScholarBank@NUS Repository. https://doi.org/10.1006/jabr.2001.8756
Abstract: The signature of Γ+ 0(eN2), where e is square free, is completely determined if e=3 or N is odd or e∈Ψ, where Ψ is the set of all square free integers e∈N such that (i) if is odd, then admits no divisors of the form 8+3, (ii) if is even, then admits no divisors of the form 8+7.In particular, v2 (number of elliptic classes of period 2 of Γ+ 0(n)) is expressed as a linear combination of multiplicative functions. © 2001 Academic Press.
Source Title: Journal of Algebra
URI: http://scholarbank.nus.edu.sg/handle/10635/104352
ISSN: 00218693
DOI: 10.1006/jabr.2001.8756
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