Smooth three-dimensional canonical thresholds
Smooth three-dimensional canonical thresholds
复制标题
平滑三维规范阈值
DOI:
10.1134/s0001434611070261
复制
发表时间:
2011
影响因子:
0.6
通讯作者:
D. Stepanov
中科院分区:
文献类型:
--
作者:
D. Stepanov
IfXis an algebraic variety with at most canonical singularities andSis a ℚ-Cartier hypersurface inX, then the canonical threshold of the pair (X, S) is defined as the least upper bound of the realscfor which the pair (X, cS) is canonical. We show that the set of all possible canonical thresholds of the pairs (X, S), whereXis smooth and three-dimensional, satisfies the ascending chain condition. We also derive a formula for the canonical threshold of the pair (ℂ3,S), whereSis a Brieskorn singularity.