Zeta functions for formal weight enumerators and the extremal property
Zeta functions for formal weight enumerators and the extremal property
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用于形式权重枚举器和极值属性的 Zeta 函数
DOI:
10.3792/pjaa.81.168
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
K. Chinen
中科院分区:
文献类型:
--
作者:
K. Chinen
In 1999, Iwan Duursma defined the zeta function for a linear code as a generating function of its Hamming weight enumerator. It has various properties similar to those of the zeta function of an algebraic curve. This article extends Duursma's theory to the case of formal weight enumerators. It is shown that the zeta function for a formal weight enumerator has a similar structure to that of the weight enumerator of a Type II code. The notion of the extremal formal weight enumerators is introduced and an analogue of the Mallows-Sloane bound is obtained. Moreover the ternary case is considered.