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ON SOME MODULAR EQUATIONS AND THEIR APPLICATIONS I

  • Yi, Jinhee (Department of Mathematics and Computer Science Korea Science Academy of KAIST) ;
  • Cho, Man Gi (Department of Mathematics and Computer Science Korea Science Academy of KAIST) ;
  • Kim, Jeong Hwan (Department of Mathematics and Computer Science Korea Science Academy of KAIST) ;
  • Lee, Seong Hoi (Department of Mathematics and Computer Science Korea Science Academy of KAIST) ;
  • Yu, Jae Myung (Department of Mathematics and Computer Science Korea Science Academy of KAIST) ;
  • Paek, Dae Hyun (Department of Mathematics Education Busan National University of Education)
  • Received : 2012.02.16
  • Published : 2013.05.31

Abstract

We derive several modular equations and present their proofs based on concise algebraic computations. In addition, we establish explicit relations and formulas for some parameterizations for the theta functions ${\varphi}$ and ${\psi}$ and show some applications of the modular equations to evaluations of the cubic continued fraction and the theta function ${\psi}$.

Keywords

References

  1. B. C. Berndt, Number Theory in the Spirit of Ramanujan, American Mathematical Society, 2006.
  2. B. C. Berndt, Ramanujan's Notebooks, Part III, Springer-Verlag, New York, 1991.
  3. B. C. Berndt, Ramanujan's Notebooks, Part IV, Springer-Verlag, New York, 1994.
  4. H. H. Chan, On Ramanujan's cubic continued fraction, Acta Arith. 73 (1995), 343-355. https://doi.org/10.4064/aa-73-4-343-355
  5. R. A. Rankin, Modular Forms and Functions, Cambridge University Press, Cambridge, 1977.
  6. B. Schoeneberg, Elliptic Modular Functions, Springer-Verlag, New York, 1974.
  7. J. Yi, The Construction and Applications of Modular Equations, Ph.D. Thesis, University of Illinois at Urbana-Champaign, 2001.
  8. J. Yi, Theta-function identities and the explicit formulas for theta-function and their applications, J. Math. Anal. Appl. 292 (2004), no. 2, 381-400. https://doi.org/10.1016/j.jmaa.2003.12.009
  9. J. Yi, Y. Lee, and D. H. Paek, The explicit formulas and evaluations of Ramanujan's theta-function ${\psi}$, J. Math. Anal. Appl. 321 (2006), no. 1, 157-181. https://doi.org/10.1016/j.jmaa.2005.07.062

Cited by

  1. ON SOME MODULAR EQUATIONS AND THEIR APPLICATIONS II vol.50, pp.4, 2013, https://doi.org/10.4134/BKMS.2013.50.4.1221
  2. ON SOME MODULAR EQUATIONS OF DEGREE 5 AND THEIR APPLICATIONS vol.50, pp.4, 2013, https://doi.org/10.4134/BKMS.2013.50.4.1315