Sums of squares in Witt rings

DOI10.1016/0022-4049(90)90078-VzbMath0716.11019MaRDI QIDQ752742

David W. Lewis

Publication date: 1990

Published in: Journal of Pure and Applied Algebra (Search for Journal in Brave)

zbMATH Keywords

quadratic formsfundamental idealPositivstellensatzreal algebraic geometrysemi-algebraic setsnonformally realSAP- fieldsums of squares in Witt rings

Mathematics Subject Classification ID

Algebraic theory of quadratic forms; Witt groups and rings (11E81) Real and complex fields (12D99)

Related Items

Quadratic Forms

Cites Work

• On the description of the reduced Witt ring
• On trace forms of algebraic number fields
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