Quartic exercises

Max-Albert Knus and Jean-Pierre Tignol

International Journal of Mathematics and Mathematical Sciences, 2003, vol. 2003, 1-61

Abstract:

A correspondence between quartic étale algebras over a field and quadratic étale extensions of cubic étale algebras is set up and investigated. The basic constructions are laid out in general for sets with a profinite group action and for torsors, and translated in terms of étale algebras and Galois algebras. A parametrization of cyclic quartic algebras is given.

Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:284672

DOI: 10.1155/S0161171203203458

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