MATHEMATICA BOHEMICA, Vol. 128, No. 3, pp. 225-236 (2003)

The connection between quadratic forms and the extended modular group

Ahmet Tekcan, Osman Bizim

Ahmet Tekcan, Osman Bizim, University of Uludag, Faculty of Science, Dept. of Mathematics, G\"{o}r\"{u}kle 16059, Bursa-Turkey, e-mails: fahmet@uludag.edu.tr, obizim@uludag.edu.tr

Abstract: 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.

Keywords: binary quadratic forms, reduced forms, extended modular group

Classification (MSC2000): 11E25

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