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Sur les -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 whose -invariant and -invariant are different: or . These fields are also -fields. RSUM. Nous donnons ici de nouveaux exemples de corps en caractéristique dont le -invariant et le -invariant diffèrent. Plus précisément: et ou . Ces corps sont aussi des -corps.
References:
- [B]
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-invariants of characteritic Bol.Soc.Bras.Mat. p. . MR 84f:10027 - [Bl]
- A. Blanchard: Les corps non commutatifs, Coll. Sup., P.U.F., 1972. MR 50:7242
- [K]
- I. Kaplanski: Fields and Rings, Univ. Chicago Press,
MR 50:2139; MR 96a:12001 - [L]
- S. Lang: Algebra , Addison-Wesley,
MR 86j:00003 (second edition) - [Le]
- D. Leep: Pfister conjectures on quadratic co-fields , Journal füdie reine und angewandte Mathematik 404(1990), 209 - 220. MR 91d:11036
- [MMW]
- P. Mammone, R. Moresi, A. Wadsworth: u-invariants of fields of characteristic
, Math. Z. 208(1991), 335 - 347. MR 92m:11033 - [M]
- R. Moresi:On a class of fields admitting only cyclic extensions of prime power degree. Bol. Soc. Bras. Mat.Vol
, p. . MR 87g:12003 - [P]
- Pfister: Systems of quadratic forms, Bull. Soc. Math. France, Mémoire
, p. . MR 80j:10033 - [S]
- D. Saltman: Splittings of cyclic p-algebras, Proc. Am. Math. Soc.
, p. . MR 55:8006
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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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