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Hilbert-Kunz multiplicity of products of ideals
Published 31 Dec 2015 in math.AC | (1601.00014v2)
Abstract: We give bounds for the Hilbert-Kunz multiplicity of the product of two ideals, and we characterize the equality in terms of the tight closures of the ideals. Connections are drawn with $*$-spread and with ordinary length calculations.
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