Half twists of Hodge structures of CM-type

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To a Hodge structure V of weight k with CM by a field K we associate Hodge structures V_{-n/2} of weight k+n for n positive and, under certain circumstances, also for n negative. We show that these `half twists' come up naturally in the Kuga-Satake varieties of weight two Hodge structures with CM by an imaginary quadratic field.
16 pages. To appear in: Journal of the Mathematical Society of Japan

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Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/59705

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0008076
 http://arxiv.org/abs/math/0008076

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arXiv