Automorphs of indefinite binary quadratic forms and K3-surfaces with Picard number 2

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Every indefinite binary form occurs as the Picard lattice of some K3-surface. The group of its isometries, or automorphs, coincides with the automorphism group of the K3-surface, but only up to finite groups. The classical theory of automorphs for binary forms can then be applied to study these automorphism groups. The result is a precise description of all possible automorphism groups of ``general'' K3's with Picard number two.

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Algebraic Geometry, 14J28,14J50

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http://salesiana.dossiersoluciones.com/handle/123456789/158137

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.0725
 http://arxiv.org/abs/0804.0725

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arXiv