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Dual F-signature

Published 11 Jan 2013 in math.AC and math.AG | (1301.2381v2)

Abstract: We define the dual F-signature of modules, which is equivalent to the F-signature if the module is the base ring. By using this invariant, We give characterizations of regular, F-regular, F-rational, and Gorenstein singularities.

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Authors (1)

  1. Akiyoshi Sannai 

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