Geodesic
Modular Subgroups, Forms, Curves and Surfaces
Canadian mathematical bulletin, Tome 45 (2002) no. 2, pp. 294-308

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

We study a class of subgroups of $\text{PS}{{\text{L}}_{2}}\left( \mathbb{Z} \right)$ which can be characterized in different ways, such as congruence groups, modular forms, modular curves, elliptic surfaces, lattices and graphs.
DOI : 10.4153/CMB-2002-033-1
Mots-clés : 20H05 
Sebbar, Abdellah. Modular Subgroups, Forms, Curves and Surfaces. Canadian mathematical bulletin, Tome 45 (2002) no. 2, pp. 294-308. doi: 10.4153/CMB-2002-033-1
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