Vanishing of negative \(K\)-theory in positive characteristic (Q2921073)

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scientific article; zbMATH DE number 6349700
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Vanishing of negative \(K\)-theory in positive characteristic
scientific article; zbMATH DE number 6349700

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    30 September 2014
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    negative \(K\)-theory
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    homotopy \(K\)-theory
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    alterations
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    Vanishing of negative \(K\)-theory in positive characteristic (English)
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    Let \(K_n\) be the \(K\)-theory of Bass-Thomason-Trobaugh, and let \(X\) be a quasi-excellent noetherian scheme. The main result is that \(K_n (X) \otimes \mathbb{Z}[1/p] =0\) for \(n < - \dim X\) and a prime \(p\) that is nilpotent on \(X\). The proof reduces the statement to the vanishing of the homotopy \(K\)-theory of Weibel. To prove this vanishing result, the author uses recent work of \textit{D.-Ch. Cisinski} [Ann. Math. (2) 177, No. 2, 425--448 (2013; Zbl 1264.19003)] in conjunction with a theorem of \textit{O. Gabber}, ``Finiteness theorems for étale cohomology of excellent schemes'', in: Conference in honor of P. Deligne on the occasion of his 61st birthday, IAS, Princeton, October 2005 (2005)] on alterations as a replacement for resolution of singularities.
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