On Ramanujan's cubic continued fraction as a modular function

Bumkyu Cho, Ja Kyung Koo, Yoon Kyung Park

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We first extend the results of Chan ([4]) and Baruah ([2]) on the modular equations of Ramanujan's cubic continued fraction C(r) to all primes p by finding the affine models of modular curves and then derive Kronecker's congruence relations for these modular equations. We further show that by its singular values we can generate ray class fields modulo 6 over imaginary quadratic fields and find their class polynomials after proving that 1/C(τ) is an algebraic integer.

Original languageEnglish
Pages (from-to)579-603
Number of pages25
JournalTohoku Mathematical Journal
Volume62
Issue number4
DOIs
StatePublished - Dec 2010

Keywords

  • Class field theory
  • Modular form
  • Ramanujan cubic continued fraction

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