A G ] 8 J an 2 02 0 JUMPING NUMBERS OF ANALYTIC MULTIPLIER IDEALS ( WITH AN APPENDIX BY SÉBASTIEN BOUCKSOM )

A G ] 8 J an 2 02 0 JUMPING NUMBERS OF ANALYTIC MULTIPLIER IDEALS ( WITH AN APPENDIX BY SÉBASTIEN BOUCKSOM )
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A G ] 8 Jan 和 2 02 0 解析乘法器理想的跳跃数(附有 SÉBASTIEN BOUCKSOM 的附录)

DOI:
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发表时间:
2020
期刊:
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通讯作者:
Dano Kim
Dano Kim
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作者:
Dano Kim

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我们将EinLazarsfeld-Smith-Varolin所引起的乘子理想的跳数的研究从代数情况推广到一般多次调和函数的情况。虽然Ein-Lazarsfeld-Smith-Varolin的许多性质被证明可以推广到多次谐波情况,但重要的性质如周期性和离散性不再成立。以前只有两个特定的跳跃数具有聚类点(即离散性失效)的例子是已知的,分别是由于Guan-Li和Ein-Lazarsfeld-Smith-Varolin。我们通过精确刻画跳跃数的聚类点并计算所有聚类点,将其推广到二维空间中所有的环次谐波函数。这一特征表明跳跃数的聚类是一种相当频繁的现象。特别是,我们得到了数不清的新的这样的例子。
We extend the study of jumping numbers of multiplier ideals due to EinLazarsfeld-Smith-Varolin from the algebraic case to the case of general plurisubharmonic functions. While many properties from Ein-Lazarsfeld-Smith-Varolin are shown to generalize to the plurisubharmonic case, important properties such as periodicity and discreteness do not hold any more. Previously only two particular examples with a cluster point (i.e. failure of discreteness) of jumping numbers were known, due to Guan-Li and to Ein-Lazarsfeld-Smith-Varolin respectively. We generalize them to all toric plurisubharmonic functions in dimension 2 by characterizing precisely when cluster points of jumping numbers exist and by computing all those cluster points. This characterization suggests that clustering of jumping numbers is a rather frequent phenomenon. In particular, we obtain uncountably many new such examples.
DOI: 10.1090/s0894-0347-99-00285-4
发表时间: 1997-12
影响因子: 3.9
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发表时间: 2005
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