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Algebraicity of some Weil Hodge Classes

Published online by Cambridge University Press:  20 November 2018

Kenji Koike*
Affiliation:
Faculty of Education and Human Science Yamanashi University Takeda 4-4-37, Kofu Yamanashi 400-8510 Japan
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Abstract

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We show that the Prym map for 4-th cyclic étale covers of curves of genus 4 is a dominant morphism to a Shimura variety for a family of Abelian 6-folds of Weil type. According to the result of Schoen, this implies algebraicity of Weil classes for this family.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2004

References

[1] Arbarello, E., Cornalba, M., Griffiths, P. A. and Harris, J., Geometry of Algebraic Curves. Springer-Verlag, New York, 1985.Google Scholar
[2] Beauville, A., Variétés de Prym et Jacobiennes intermédiaires. Ann. Sci. École Norm. Sup. 10 (1977), 309391.Google Scholar
[3] van Geemen, B., An introduction to the Hodge conjecture for abelian varieties.In: Algebraic cycles and Hodge theory. Lecture Notes in Mathematics, 1594, Springer, Berlin, 1994, pp. 233–252.Google Scholar
[4] van Geemen, B., Theta functions and cycles on some abelian fourfolds. Math. Z. 221 (1996), 617631.Google Scholar
[5] van Geemen, B. and Verra, A., Quaternionic pryms and Hodge classes. Topology 32 (2003), 3553.Google Scholar
[6] Lange, H. and Birkenhake, C., Complex Abelian Varieties. Grundlehren Math.Wiss. 302(1992).Google Scholar
[7] Schoen, C., Hodge classes on self-products of a variety with an automorphism. Comp.Math. 65 (1988), 332.Google Scholar
[8] Schoen, C., Addendum to Hodge classes on self-products of a variety with an automorphism. Comp. Math. 114 (1998), 329336.Google Scholar
[9] Weil, A., Abelian varieties and the Hodge ring. In: Collected Papers III (1964–1978), Springer-Verlag, New York, 1979.Google Scholar