1.

図書
図書
1. Recent advances in real algebraic geometry and quadratic forms : proceedings of the RAGSQUAD year, Berkeley, 1990-1991
William B. Jacob, Tsit-Yuen Lam, Robert O. Robson, editors
出版情報: Providence, R.I. : American Mathematical Society, c1994
シリーズ名: Contemporary mathematics ; v. 155
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2.

図書
図書
2. Quadratic forms with applications to algebraic geometry and topology
Albrecht Pfister
出版情報: Cambridge : Cambridge University Press, 1995
シリーズ名: London Mathematical Society lecture note series ; 217
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