The F-Signature and Strong F-Regularity
We show that the F-signature of a local ring of characteristic p, defined by Huneke and Leuschke, is positive if and only if the ring is strongly F-regular.
Aberbach, Ian M. and Leuschke, Graham J., "The F-Signature and Strong F-Regularity" (2002). Mathematics Faculty Scholarship. 27.
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