The Artin invariant of supersingular weighted Delsarte K3 surfaces
The Artin invariant of supersingular weighted Delsarte K3 surfaces
复制标题
超奇异加权 Delsarte K3 曲面的 Artin 不变量
DOI:
10.1215/kjm/1250518553
复制
发表时间:
1996
影响因子:
--
通讯作者:
Yasuhiro Goto
中科院分区:
文献类型:
--
作者:
Yasuhiro Goto
L et k be a n algebraically closed field of positive characteristic p. L et X , be a K3 surface defined over k. Denote by NS (X k ) the Néron-Severi group of X , . It is known that NS (Xk ) is a finitely generated abelian group with Z-rank at most 22; p u t p(X k ) = rank z NS (Xk ). A s in [10], we call X , a supersingular K 3 surface if p(X k ) = 22. Write disc NS (Xk ) for the determinant of the intersection matrix of NS (X k ). If X k is supersingular, then disc NS (Xk ) = _p2,0(xo