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An application of Siegel’s formula over quaternion orders. (English) Zbl 0538.10027

This paper is concerned with Hermitian forms over a maximal order in a definite quaternion skew field H/\({\mathbb{Q}}\) such that the associated quadratic forms are positive definite and unimodular. An ad hoc proof of Siegel’s formula for the representation of numbers and an application to the existence of forms with large minimum are given. For \(H=(-1,-1)\) the forms are classified up to real dimension 24.

MSC:

11H55 Quadratic forms (reduction theory, extreme forms, etc.)
11E12 Quadratic forms over global rings and fields
11F11 Holomorphic modular forms of integral weight
11R52 Quaternion and other division algebras: arithmetic, zeta functions
Full Text: DOI

References:

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