Further Evaluation of Wahl Vanishing Theorems for Surface Singularities in Characteristic p
Further Evaluation of Wahl Vanishing Theorems for Surface Singularities in Characteristic p
复制标题
特征p表面奇点瓦尔消失定理的进一步评价
DOI:
10.1307/mmj/1560391418
复制
发表时间:
2017
影响因子:
0.9
通讯作者:
Masayuki Hirokado
中科院分区:
文献类型:
--
作者:
Masayuki Hirokado
Let $(\mathrm{Spec }R, \frak m)$ be a rational double point defined over an algebraically closed field $k$ of characteristic $p\geq 0$. We evaluate further the dimensions of the local cohomology groups which were treated by Wahl in 1975 as vanishing theorem C (resp. D) under the assumption that $p$ is a very good prime (resp. good prime) with respect to $(\mathrm{Spec }R, \frak m)$. We use Artin's classification of rational double points and completely determine the dimensions $\dim_k H_E^1(S_X)$, $\dim_k H_E^1(S_X\otimes \mathcal O_X(E))$, supplementing Wahl's theorems. In the proof we construct derivations concretely which do not lift to the minimal resolution $X\to \mathrm{Spec }R$, as well as non-trivial equisingular families which inject into a versal deformation of the rational double point $(\mathrm{Spec }R, \mathfrak m)$.
影响因子:
0.9
作者:
Masayuki Hirokado;Hiroyuki Ito;Natsuo Saito
通讯作者:
Natsuo Saito
DOI:
--
发表时间:
2011
期刊:
Comm.in Alg. in press
影响因子:
--
作者:
H.Akiyoshi;H.sakuma;H.woda;Y.Yamashita;S.Ishii
通讯作者:
S.Ishii