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arXiv · 1004.3935

Indecomposable and Noncrossed Product Division Algebras over Curves over Complete Discrete Valuation Rings

Feng Chen
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Abstract

Let T be a complete discrete valuation ring and $\hat{X}$ a smooth projective curve over $S=\spec(T)$ with closed fibre $X$. Denote by $F$ the function field of $\hat{X}$ and by $\hat{F}$ the completion of $F$ with respect to the discrete valuation defined by $X$, the closed fibre. In this paper, we construct indecomposable and noncrossed product division algebras over $F$. This is done by defining an index preserving group homomorphism $s:\br(\hat{F})'\to\br(F)'$, and using it to lift indecomposable and noncrossed product division algebras over $\hat{F}$.

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Feng Chen. 2010-04-22. Indecomposable and Noncrossed Product Division Algebras over Curves over Complete Discrete Valuation Rings. https://arxiv.org/abs/1004.3935

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