Computations of Witt Groups of Finite Groups.
Let be a number field with ring of integers . For a fixed prime number and the étale wild kernels are defined as kernels of certain localization maps on the -fold twist of the -adic étale cohomology groups of . These groups are finite and coincide for with the -part of the classical wild kernel . They play a role similar to the -part of the -class group of . For class groups, Galois co-descent in a cyclic extension is described by the ambiguous class formula given by genus theory....
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