Triality and étale algebras
Identifieur interne : 000307 ( Istex/Checkpoint ); précédent : 000306; suivant : 000308Triality and étale algebras
Auteurs : Max-Albert Knus [Suisse] ; Jean-Pierre Tignol [Belgique]Source :
- Developments in Mathematics [ 1389-2177 ] ; 2010.
Abstract
Summary: Trialitarian automorphisms are related to automorphisms of order 3 of the Dynkin diagram of type D 4. Octic étale algebras with trivial discriminant containing quartic subalgebras are classified by Galois cohomology with values in the Weyl group of type D 4. This paper discusses triality for such étale extensions.
Url:
DOI: 10.1007/978-1-4419-6211-9_16
Affiliations:
- Belgique, Suisse
- Canton de Zurich, Province du Brabant wallon, Région wallonne
- Louvain-la-Neuve, Zurich
- Université catholique de Louvain
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