THETA CONSTANTS ASSOCIATED TO CUBIC THREE FOLDS
THETA CONSTANTS ASSOCIATED TO CUBIC THREE FOLDS
复制标题
与三次方相关的 Theta 常数
DOI:
10.1090/s1056-3911-03-00348-5
复制
发表时间:
2000
影响因子:
1.8
通讯作者:
T. Terasoma
中科院分区:
文献类型:
--
作者:
K. Matsumoto;T. Terasoma
For a cubic surface X, by considering the intermediate Jacobian J(Y) of the triple covering Y of the 3-dimensional projective space branching along X, Allcock, Carlson and Toledo constructed a period map per from the family of marked cubic surfaces to the four dimensional complex ball embedded in the Siegel upper half space of degree 5. We give an expression of the inverse of per in terms of theta constants by constructing an isomorphism between J(Y) and a Prym variety of a cyclic 6-ple covering of the projective line branching at seven points.