Invariants Associated to Orthogonal ε-constants
Glass, Darren
Original · EN
In this paper we use the theory of ε-constants associated to tame finite group actions on arithmetic surfaces to define a Brauer group invariant μ(,G,V) associated to certain symplectic motives of weight one. We then discuss the relationship between this invariant and w₂(π), the Galois theoretic invariant associated to tame covers of surfaces.
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