Quaternary universal forms over \(\mathbb Q(\sqrt{13})\)

DOI10.1007/s11139-007-9056-2zbMath1193.11033OpenAlexW2020484120MaRDI QIDQ1039634

Hideyo Sasaki

Publication date: 23 November 2009

Published in: The Ramanujan Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s11139-007-9056-2

zbMATH Keywords

quadratic fieldsquaternary quadratic forms

Mathematics Subject Classification ID

Sums of squares and representations by other particular quadratic forms (11E25) General ternary and quaternary quadratic forms; forms of more than two variables (11E20)

Related Items (7)

UNIVERSAL QUADRATIC FORMS AND ELEMENTS OF SMALL NORM IN REAL QUADRATIC FIELDS ⋮ Lifting problem for universal quadratic forms over totally real cubic number fields ⋮ Lifting problem for universal quadratic forms ⋮ Universal quadratic forms over multiquadratic fields ⋮ On the rank of universal quadratic forms over real quadratic fields ⋮ There are no universal ternary quadratic forms over biquadratic fields ⋮ On indefinite and potentially universal quadratic forms over number fields

Cites Work

• On the class number of a unit lattice over a ring of real quadratic integers
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