Geodesic
The connection between quadratic forms and the extended modular group
Mathematica Bohemica, Tome 128 (2003) no. 3, pp. 225-236.

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In this paper some properties of quadratic forms whose base points lie in the point set $F_{\overline{\Pi }}$, the fundamental domain of the modular group, and transforming these forms into the reduced forms with the same discriminant $\Delta 0$ are given.
DOI : 10.21136/MB.2003.134178
Classification : 11E10, 11E16, 11E25, 11F06
Keywords: binary quadratic forms; reduced forms; extended modular group 
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Tekcan, Ahmet; Bizim, Osman. The connection between quadratic forms and the extended modular group. Mathematica Bohemica, Tome 128 (2003) no. 3, pp. 225-236. doi : 10.21136/MB.2003.134178. http://geodesic.mathdoc.fr/articles/10.21136/MB.2003.134178/

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