Document Zbl 0499.12018

Choi, M. D.; Dai, Z. D.; Lam, T. Y.; Reznick, B.

The Pythagoras number of some affine algebras and local algebras. (English) Zbl 0499.12018

J. Reine Angew. Math. 336, 45-82 (1982).

Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page
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MSC:

12D15	Fields related with sums of squares (formally real fields, Pythagorean fields, etc.)
11E04	Quadratic forms over general fields

Keywords:

Pythagoras number; affine algebras; local algebras; sum of squares; arithmetic invariant; Pfister dimension; Quadratstufe; reduced height

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References:

[1]	Thelene, France Formes quadratiques sur les anneaux semilocaux reguliere Bull, Math 106 pp 113– (1978)

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