两个Chow稳定性准则对正特征的推广
Extensions of two Chow stability criteria to positive characteristics
摘要:
本文将Chow(半)稳定性的两个结果推广到正特征线上.一个是关于次数大于2的非奇异射影超曲面的稳定性,另一个是Y. Lee的对数正则阈值。结合正特征线对数正则性的证明,讨论了正特征线对数正则性的一些性质。在附录中还证明了Chow(半)稳定圈的和也是Chow(半)稳定的。
英文摘要:
We extend two results on Chow (semi-)stability to positive characteristics. One is on the stability of non-singular projective hypersurfaces of degree greater than 2, and the other is the criterion by Y. Lee in terms of log canonical thresholds. Some properties of log-canonicity in positive characteristics are discussed with a couple of examples, in connection with the proof of the latter one. It is also proven in appendix that the sum of Chow (semi-)stable cycles are again Chow (semi-)stable.
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