Brauer Group Invariants Associated to Orthogonal Epsilon-constants
نویسنده
چکیده
In this paper, the theory of ε-constants associated to tame finite group actions on arithmetic surfaces is used to define a Brauer group invariant μ(X , G, V ) associated to certain symplectic motives of weight one. The relationship between this invariant and w2(π) (the Galois-theoretic invariant associated to tame covers of surfaces defined by Cassou-Noguès, Erez and Taylor) is also discussed.
منابع مشابه
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تاریخ انتشار 2005