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MATHEMATICA BOHEMICA, Vol. 128, No. 3, pp. 225-236 (2003)
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The connection between quadratic forms and the extended modular group

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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

**Full text of the article:**

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