Geodesic
Upper Bounds on |L(1, χ)| and Applications
Canadian journal of mathematics, Tome 50 (1998) no. 4, pp. 794-815

Voir la notice de l'article provenant de la source Cambridge University Press

We give upper bounds on the modulus of the values at $s\,=\,1$ of Artin $L$ -functions of abelian extensions unramified at all the infinite places. We also explain how we can compute better upper bounds and explain how useful such computed bounds are when dealing with class number problems for $\text{CM}$ -fields. For example, we will reduce the determination of all the non-abelian normal $\text{CM}$ -fields of degree 24 with Galois group $\text{S}{{\text{L}}_{\text{2}}}\left( {{F}_{3}} \right)$ (the special linear group over the finite field with three elements) which have class number one to the computation of the class numbers of 23 such $\text{CM}$ -fields.
DOI : 10.4153/CJM-1998-042-2
Mots-clés : 11M20, 11R42, 11Y35, 11R29, Dedekind zeta function, Dirichlet series, CM-field, relative class number 
Louboutin, Stéphane. Upper Bounds on |L(1, χ)| and Applications. Canadian journal of mathematics, Tome 50 (1998) no. 4, pp. 794-815. doi: 10.4153/CJM-1998-042-2
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