Title: Invariants of quasi-trivial tori and the Rost invariant
Abstract:For any absolutely simple, simply connected linear algebraic group G over a field F, Rost has defined invariants for torsors under G with values in the Galois cohomology group H^3(F,Q/Z(2)). The aim o...For any absolutely simple, simply connected linear algebraic group G over a field F, Rost has defined invariants for torsors under G with values in the Galois cohomology group H^3(F,Q/Z(2)). The aim of this paper is to give an explicit description of these invariants for torsors induced from the center of G, when G is of type A_n or D_n. As an application, we show that the multipliers of unitary similitudes satisfy a relation involving the discriminant algebra.Read More
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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Cited By Count: 15
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