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Search: All articles in the CMB digital archive with keyword descent

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1. CMB 2012 (vol 57 pp. 303)

Gille, Philippe
 Octonion Algebras over Rings are not Determined by their Norms Answering a question of H. Petersson, we provide a class of examples of pair of octonion algebras over a ring having isometric norms. Keywords:octonion algebras, torsors, descentCategories:14L24, 20G41

2. CMB 2007 (vol 50 pp. 535)

Hohlweg, Christophe
 Generalized Descent Algebras If $A$ is a subset of the set of reflections of a finite Coxeter group $W$, we define a sub-$\ZM$-module $\DC_A(W)$ of the group algebra $\ZM W$. We discuss cases where this submodule is a subalgebra. This family of subalgebras includes strictly the Solomon descent algebra, the group algebra and, if $W$ is of type $B$, the Mantaci--Reutenauer algebra. Keywords:Coxeter group, Solomon descent algebra, descent setCategories:20F55, 05E15
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