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arXiv 2302.01431math.RAmath.KTmath.NT
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Fields with bounded Brauer $2$-torsion index

Karim Johannes Becher

英文摘要:

It is shown that, over a field of characteristic not $2$, the dimension of an anisotropic quadratic Pfister form of trivial total signature is at most twice the dimension of some central division algebra of exponent $2$. The proof is based on computations with quadratic trace forms of central simple algebras.

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