Determination of the Class Number of Positive Quadratic Forms in Nine Variables with Determinant Unity

DOI10.1112/jlms/s1-13.2.102zbMath0018.29402OpenAlexW2013915437MaRDI QIDQ5768441

Chao Ko

Publication date: 1938

Published in: Journal of the London Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1112/jlms/s1-13.2.102

zbMATH Keywords

nine variablesclass number of positive quadratic formsdeterminant unity

Mathematics Subject Classification ID

Quadratic forms over global rings and fields (11E12) Class numbers of quadratic and Hermitian forms (11E41)

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The construction of indecomposable positive definite quadratic forms., Matrices of rational integers, Klassenzahlen definiter quadratischer Formen