SMOOTH CURVES ON PROJECTIVE K3 SURFACES
SMOOTH CURVES ON PROJECTIVE K3 SURFACES
复制标题
K3 投影表面上的平滑曲线
DOI:
--
复制
发表时间:
1998
期刊:
影响因子:
--
通讯作者:
A. L. Knutsen
中科院分区:
文献类型:
--
作者:
A. L. Knutsen
In this paper we give for all $n geq 2$, $d>0$, $g geq 0$ necessary and sufficient conditions for the existence of a pair $(X,C)$, where $X$ is a $K3$ surface of degree $2n$ in $mathrm{P}^{n+1}$ and $C$ is a smooth (reduced and irreducible) curve of degree $d$ and genus $g$ on $X$. The surfaces constructed have Picard group of minimal rank possible (being either $1$ or $2$), and in each case we specify a set of generators. For $n geq 4$ we also determine when $X$ can be chosen to be an intersection of quadrics (in all other cases $X$ has to be an intersection of both quadrics and cubics). Finally, we give necessary and sufficient conditions for $mathcal O_C (k)$ to be non-special, for any integer $k geq 1$.