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Euler cycles and Mennicke symbols. (arXiv:1712.06162v1 [math.AC])

来源于:arXiv
Let $R$ be a smooth affine domain of dimension $d\geq 2$ over an infinite perfect field $k$ such that $2R=R$. We establish a morphism from the Euler class group $E^d(R)$ to $Um_{d+1}(R)/E_{d+1}(R)$, the group of elementary orbits of unimodular rows. 查看全文>>