Some Galois extensions of quadratic extensions associated with Witt rings
Wenfeng Gao, Ján Mináč
math.GRarXiv:math/0110284
Abstract
A Galois field extension E/F whose Galois group is a pro-2-group of an exponent of at most 8, with a nilpotency class of at most 4, is determined, such that it contains essential information about the Witt rings of all quadratic extensions of F.
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