Designs, Codes and Cryptography

, Volume 76, Issue 2, pp 217–235 | Cite as

Theta functions and symmetric weight enumerators for codes over imaginary quadratic fields

Article

Abstract

In this paper we continue the study of codes over imaginary quadratic fields and their weight enumerators and theta functions. We present new examples of non-equivalent codes over rings of characteristic \(p=2\) and \(p=5\) which have the same theta functions. We also look at a generalization of codes over imaginary quadratic fields, providing examples of non-equivalent pairs with the same theta function for \(p=3\) and \(p=5\).

Keywords

Imaginary field Theta functions Weight enumerators 

Mathematics Subject Classification

Primary 94B27 Secondary 14G50 11H71 

References

  1. 1.
    Bachoc C.: Applications of coding theory to the construction of modular lattices. J. Comb. Theory Ser. A 78(1), 92–119 (1997).Google Scholar
  2. 2.
    Chua K.S.: Codes over \(\rm {GF}(4)\) and F \(_2\times \) F \(_2\) and Hermitian lattices over imaginary quadratic fields. Proc. Am. Math. Soc. 133(3), 661–670 (2005).Google Scholar
  3. 3.
    Dougherty S., Kim J.-L., Lee Y.: Linear codes, hermitian lattices, and finite rings (in press).Google Scholar
  4. 4.
    Günther A., Nebe G.: Clifford–Weil groups for finite group rings, some examples. Alban. J. Math. 2(3), 185–198 (2008).Google Scholar
  5. 5.
    Günther A., Nebe G., Rains E.M.: Clifford–Weil groups of quotient representations. Alban. J. Math. 2(3), 159–169 (2008).Google Scholar
  6. 6.
    Leech J., Sloane N.J.A.: Sphere packing and error-correcting codes. Can. J. Math. 23, 718–745 (1971).Google Scholar
  7. 7.
    MacWilliams F.J., Sloane N.J.A.: The Theory of Error-Correcting Codes. II. North-Holland Mathematical Library, vol. 16, pp. 1–10, 370–762. North-Holland, Amsterdam (1977).Google Scholar
  8. 8.
    MacWilliams F.J., Sloane N.J.A.: The Theory of Error-Correcting Codes. I. North-Holland Mathematical Library, vol. 16, pp. 1–15, 1–369. North-Holland, Amsterdam (1977).Google Scholar
  9. 9.
    Shaska T., Shor C.: Codes over \(F_{p^2}\) and \(F_p \times F_p\), lattices, and corresponding theta functions. Adv. Coding Theory Cryptol. 3, 70–80 (2007).Google Scholar
  10. 10.
    Shaska T., Wijesiri S.: Codes over rings of size four, Hermitian lattices, and corresponding theta functions. Proc. Am. Math. Soc. 136, 849–960 (2008).Google Scholar
  11. 11.
    Shaska T., Shor C., Wijesiri S.: Codes over rings of size \(p^2\) and lattices over imaginary quadratic fields. Finite Fields Appl. 16(2), 75–87 (2010).Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of Mathematics and StatisticsOakland UniversityRochesterUSA
  2. 2.Department of MathematicsWestern New England UniversitySpringfieldUSA

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