Title
A lemma on polynomials modulo pm and applications to coding theory
Abstract
An integer-valued function f(x) on the integers that is periodic of period p^e, p prime, can be matched, modulo p^m, by a polynomial function w(x); we show that w(x) may be taken to have degree at most (m(p-1)+1)p^e^-^1-1. Applications include a short proof of the theorem of McEliece on the divisibility of weights of codewords in p-ary cyclic codes by powers of p, an elementary proof of the Ax-Katz theorem on solutions of congruences modulo p, and results on the numbers of codewords in p-ary linear codes with weights in a given congruence class modulo p^e.
Year
DOI
Venue
2006
10.1016/j.disc.2004.10.030
Discrete Mathematics
Keywords
Field
DocType
11b50,ax-katz,11t71,11t06,weights,coding theory,ax–katz,codes,05a10,polynomials,mceliece,cyclic code,linear code,value function
Prime (order theory),Discrete mathematics,Combinatorics,Polynomial,Multiplicative group of integers modulo n,Modulo,Elementary proof,Root of unity modulo n,Linear code,Mathematics,Primitive root modulo n
Journal
Volume
Issue
ISSN
306
23
Discrete Mathematics
Citations 
PageRank 
References 
7
0.68
3
Authors
1
Name
Order
Citations
PageRank
Richard M. Wilson1697340.86