Binary odd-like duadic codes have parameters [n,(n+ 1)/2], where n is odd. It is well known
that the minimum odd weight of odd-like duadic codes has the lower bound n. The binary …

We present new constructions of binary quantum codes from quaternary linear Hermitian
self-dual codes. Our main ingredients for these constructions are nearly self-orthogonal …

Quantum error-correcting codes (quantum codes) are applied to protect quantum
information from errors caused by noise (decoherence) on the quantum channel in a way …

In this paper we present a new method for finding the weight enumerator of binary linear
block codes by using genetic algorithms. This method consists in finding the binary weight …

The only example of a binary doubly-even self-dual [120, 60, 20] code was found in 2005 by
Gaborit et al.(IEEE Trans Inform theory 51, 402–407 2005). In this work we present 25 new …

It is very hard to construct an infinite family of cyclic codes of rate close to one half whose
minimum distances have a good bound. Tang-Ding codes are very interesting, as their …

Binary cyclic codes have been a hot topic for many years, and significant progress has been
made in the study of this types of codes. As is well known, it is hard to construct infinite …

This paper presents a more efficient algorithm to count codewords of given weights in self-
dual double-circulant and formally self-dual quadratic double-circulant codes over GF (2). A …

This paper used an efficient scheme to determine the number of codewords for a given
weight in the binary extended quadratic residue code. The scheme consists of a weight …

arxiv:1902.08739v1 [math.CO] 23 Feb 2019 New doubly even self-dual codes having minimum
weight 20 Page 1 arxiv:1902.08739v1 [math.CO] 23 Feb 2019 New doubly even self-dual …