The splitting principle for cohomological invariants of finite orthogonal reflection groups with values in cycle modules, and for Witt and Milnor-Witt invariants, is proved over fields of characteristic coprime to the group order.
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On the splitting principle for cohomological invariants of reflection groups
The splitting principle for cohomological invariants of finite orthogonal reflection groups with values in cycle modules, and for Witt and Milnor-Witt invariants, is proved over fields of characteristic coprime to the group order.