On polarised class groups of orders in quartic CM-fields

    2013.

    Cited by: 8|Bibtex|Views0|Links

    Abstract:

    We give an explicit necessary condition for pairs of orders in a quartic CM-field to have the same polarised class group. This generalises a simpler result for imaginary quadratic fields. We give an application of our results to computing endomorphism rings of abelian surfaces over finite fields, and we use our results to extend a compl...More

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