The Artin invariant of supersingular weighted Delsarte K3 surfaces

The Artin invariant of supersingular weighted Delsarte K3 surfaces
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超奇异加权 Delsarte K3 曲面的 Artin 不变量

DOI:
10.1215/kjm/1250518553
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发表时间:
1996
影响因子:
--
通讯作者:
Yasuhiro Goto
Yasuhiro Goto
中科院分区:
--
文献类型:
--
作者:
Yasuhiro Goto

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L et k是具有正特征p的n代数闭域。L et X,是定义在k上的K3曲面。用NS(X k)表示X的Néron-Severi群。已知NS(Xk)是Z-秩至多为22的n-生成阿贝尔群; p ut p(Xk)= rank zNS(Xk).在文献[10]中,当p(Xk)= 22时,称X为超奇异K3曲面.写圆NS(Xk)求NS(Xk)的交矩阵的行列式.如果Xk是超奇异的,则圆盘NS(Xk)=_p2,0(x 0
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