Results 11 to 20 of about 722 (41)

Self dual, reversible and complementary duals constacyclic codes over finite local Frobenius non-chain rings of length 5 and nilpotency index 4.

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
Over finite local Frobenius non-chain rings of length 5 and nilpotency index 4 and when the length of the code is relatively prime to the characteristic of the residue field of the ring, the structure of the dual of γ-constacyclic codes is established ...
Castillo-Guillén C. A.   +1 more
doaj   +1 more source

A Family Of Low Density Matrices In Lagrangian–Grassmannian

open access: yesSpecial Matrices, 2018
The aim of this paper is twofold. First, we show a connection between the Lagrangian- Grassmannian variety geometry defined over a finite field with q elements and the q-ary Low-Density Parity- Check codes. Second, considering the Lagrangian-Grassmannian
Carrillo-Pacheco Jesús   +1 more
doaj   +1 more source

On extremal self-dual ternary codes of length 48 [PDF]

open access: yes, 2011
All extremal ternary codes of length 48 that have some automorphism of prime order $p\geq 5$ are equivalent to one of the two known codes, the Pless code or the extended quadratic residue ...
Nebe, Gabriele
core   +4 more sources

DAGS: Key encapsulation using dyadic GS codes

open access: yesJournal of Mathematical Cryptology, 2018
Code-based cryptography is one of the main areas of interest for NIST’s Post-Quantum Cryptography Standardization call. In this paper, we introduce DAGS, a Key Encapsulation Mechanism (KEM) based on quasi-dyadic generalized Srivastava codes.
Banegas Gustavo   +12 more
doaj   +1 more source

Stanley-Reisner resolution of constant weight linear codes [PDF]

open access: yes, 2012
Given a constant weight linear code, we investigate its weight hierarchy and the Stanley-Reisner resolution of its associated matroid regarded as a simplicial complex.
Johnsen, Trygve, Verdure, Hugues
core   +3 more sources

Universal Gr\"obner Bases for Binary Linear Codes [PDF]

open access: yes, 2013
Each linear code can be described by a code ideal given as the sum of a toric ideal and a non-prime ideal. In this way, several concepts from the theory of toric ideals can be translated into the setting of code ideals.
Dück, Natalia, Zimmermann, Karl-Heinz
core   +2 more sources

Codes Over Hyperfields

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
In this paper, we define linear codes and cyclic codes over a finite Krasner hyperfield and we characterize these codes by their generator matrices and parity check matrices.
Atamewoue Surdive   +3 more
doaj   +1 more source

Skew cyclic codes over $\mathbb{F}_{q}+v\mathbb{F}_{q}+v^{2}\mathbb{F}_{q}$

open access: yes, 2015
In this article, we study skew cyclic codes over ring $R=\mathbb{F}_{q}+v\mathbb{F}_{q}+v^{2}\mathbb{F}_{q}$, where $q=p^{m}$, $p$ is an odd prime and $v^{3}=v$.
Alahmadi, Adel   +3 more
core   +1 more source

Minimal Codewords in Linear Codes [PDF]

open access: yes, 2004
2000 Mathematics Subject Classification: 94B05, 94B15.Cyclic binary codes C of block length n = 2^m − 1 and generator polynomial g(x) = m1(x)m2^s+1(x), (s, m) = 1, are considered. The cardinalities of the sets of minimal codewords of weights 10 and 11 in
Borissov, Yuri, Manev, Nickolai
core  

Three new classes of optimal frequency-hopping sequence sets

open access: yes, 2016
The study of frequency-hopping sequences (FHSs) has been focused on the establishment of theoretical bounds for the parameters of FHSs as well as on the construction of optimal FHSs with respect to the bounds. Peng and Fan (2004) derived two lower bounds
Chen, Bocong   +3 more
core   +1 more source

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