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Estimates for F-jumping numbers and bounds for Hartshorne–Speiser–Lyubeznik numbers
Published online by Cambridge University Press: 11 January 2016
Abstract
Given an ideal a on a smooth variety in characteristic zero, we estimate the F-jumping numbers of the reductions of a to positive characteristic in terms of the jumping numbers of a and the characteristic. We apply one of our estimates to bound the Hartshorne–Speiser–Lyubeznik invariant for the reduction to positive characteristic of a hypersurface singularity.
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- Copyright © Editorial Board of Nagoya Mathematical Journal 2013
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