An elementary proof of a theorem on quadratic forms over the rational numbers

zbMath0709.11028MaRDI QIDQ921035

David B. Leep

Publication date: 1989

Published in: L'Enseignement Mathématique. 2e Série (Search for Journal in Brave)

zbMATH Keywords

Möbius functionEuler's formulaquadratic residuesHasse-Minkowski local- global principleproperties of isotropic formsvalue set of a quadratic form

Mathematics Subject Classification ID

Algebraic theory of quadratic forms; Witt groups and rings (11E81) Quadratic forms over global rings and fields (11E12)

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