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# Index – D

DedekindDomain (class in sage.rings.ring) defining_ideal() (sage.rings.quotient_ring.QuotientRing_nc method) Delta_invariant() (sage.rings.invariant_theory.TwoQuaternaryQuadratics method) Delta_prime_invariant() (sage.rings.invariant_theory.TwoQuaternaryQuadratics method) | denominator() (sage.rings.fraction_field_element.FractionFieldElement method) discriminant() (sage.rings.invariant_theory.QuadraticForm method) divides() (sage.rings.ideal.Ideal_principal method) (sage.rings.ring.Field method) dual() (sage.rings.invariant_theory.QuadraticForm method)

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