m at h . A G ] 1 M ay 2 00 7 DISCRETENESS AND RATIONALITY OF F - THRESHOLDS
نویسنده
چکیده
The F -thresholds are characteristic p analogs of the jumping coefficients for multiplier ideals in characteristic zero. We give an alternative description of the F -thresholds of an ideal in a regular and F -finite ring R, which enables us to settle two open questions posed in [MTW]. Namely, we show that if the ring is, in addition, essentially of finite type over a field, then the F -thresholds are rational and discrete.
منابع مشابه
m at h . A G ] 2 6 Ju l 2 00 6 DISCRETENESS AND RATIONALITY OF F - THRESHOLDS
The F–thresholds are characteristic p analogs of the jumping coefficients for multiplier ideals in characteristic zero. In this article we give an alternative description of the F–thresholds of an ideal in a regular and F–finite ring R. This enables us to settle two open questions posed in [MTW], namely we show that the F–thresholds are rational and discrete.
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