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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826 (e) ISSN 0002-9939 (p)
     

Sur les $p$-corps

Author(s): M. N'Kanza
Journal: Proc. Amer. Math. Soc. 127 (1999), 2587-2590.
MSC (1991): Primary 11Exx
Posted: April 9, 1999
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Abstract: Here we give new examples of fields in characteristic $ 2 $ whose $u$-invariant and $\hat{u}$-invariant are different: $ u(K) = 2, \hat{u}(K) = 2^m$ or $\infty (m \in \mathbb{N}, m \geq 1)$. These fields are also $p$-fields.

RSUM. Nous donnons ici de nouveaux exemples de corps $K$ en caractéristique $2$ dont le $u$-invariant et le $\hat u$-invariant diffèrent. Plus précisément: $ u(K) = 2 $ et $ \hat{u}(K) = 2^m$ ou $\infty (m \in \mathbb{N}, m \geq 1)$. Ces corps sont aussi des $p$-corps.


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P. Mammone, R. Moresi, A. Wadsworth: u-invariants of fields of characteristic $ 2 $ , Math. Z. 208(1991), 335 - 347. MR 92m:11033

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Additional Information:

M. N'Kanza
Affiliation: Université de Mons, Faculté des Sciences, Département de Mathématique, Avenue V. Maistriau, 15 , B-7000 Mons, Belgique

DOI: 10.1090/S0002-9939-99-04508-6
PII: S 0002-9939(99)04508-6
Received by editor(s): April 2, 1997
Received by editor(s) in revised form: November 18, 1997
Posted: April 9, 1999
Additional Notes: Je remercie le Professeur P. Mammone pour les nombreux entretiens que nous avions eus ensemble lors de la préparation de ce travail-ci de ma thèse annexe (présentée le 26 Juin 1991 à l'Université de Mons).
Communicated by: Lance W. Small
Copyright of article: Copyright 1999, American Mathematical Society


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