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arXiv 1902.01130math.AGmath.ACmath.KT
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秩为2的投射模与平凡行列式的消去

The cancellation of projective modules of rank 2 with a trivial determinant

Tariq Syed

摘要:

研究了维数为$\leq 4$的Noether环上秩为$2$且具有平凡行列式的投射模的消去性质.若$R$是代数闭域$k$上维数为$4$的光滑仿射代数,使得$6 \in k^{\times}$,则证明了秩为$2$的稳定自由$R$ -模是自由的当且仅当Hermitian $K$ -理论群$\tilde{V}_{SL} (R)$是平凡的.

英文摘要:

We study the cancellation property of projective modules of rank $2$ with a trivial determinant over Noetherian rings of dimension $\leq 4$. If $R$ is a smooth affine algebra of dimension $4$ over an algebraically closed field $k$ such that $6 \in k^{\times}$, then we prove that stably free $R$-modules of rank $2$ are free if and only if a Hermitian $K$-theory group $\tilde{V}_{SL} (R)$ is trivial.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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