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arXiv · 1608.04483

Cohomological invariants for G-Galois algebras and self-dual normal bases

Eva Bayer-Fluckiger·Raman Parimala
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Abstract

We define degree two cohomological invariants for G-Galois algebras over fields of characteristic not 2, and use them to give necessary conditions for the existence of a self--dual normal basis. In some cases, we show that these conditions are also sufficient.

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Eva Bayer-Fluckiger, Raman Parimala. 2016-08-16. Cohomological invariants for G-Galois algebras and self-dual normal bases. https://arxiv.org/abs/1608.04483

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