Eric Errthum

  1. Minimal Polynomials of Singular Moduli.

    Authors: Eric Errthum
    Subjects: Number Theory
    Abstract

    Given a properly normalized parametrization of a genus-0 modular curve, the
    complex multiplication points map to algebraic numbers called singular moduli.
    In the classical case, the maps can be given analytically. However, in the
    Shimura curve cases, no such analytical expansion is possible. Fortunately, in
    both cases there are known algorithms for algebraically computing the rational
    norms of the singular moduli. We demonstrate a method of using these norm
    algorithms to algebraically determine the minimal polynomial of the singular
    moduli below a discriminant threshold.

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