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The modular equation and modular forms of weight one
Published online by Cambridge University Press: 22 January 2016
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This is a continuation of the previous paper [8] concerning the relation between the arithmetic of imaginary quadratic fields and cusp forms of weight one on a certain congruence subgroup. Let K be an imaginary quadratic field, say K = with a prime number q ≡ − 1 mod 8, and let h be the class number of K. By the classical theory of complex multiplication, the Hubert class field L of K can be generated by any one of the class invariants over K, which is necessarily an algebraic integer, and a defining equation of which is denoted by
Φ(x) = 0.
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- Copyright © Editorial Board of Nagoya Mathematical Journal 1985
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