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In this paper, we study some repeated-root two-dimensional cyclic and constacyclic codes over a finite field $F=\mathbb{F}_q$. We obtain the generator matrices and generator polynomials of these codes and their duals. We also investigate…

Information Theory · Computer Science 2022-05-31 Marziyeh Beygi Khormaei , Ashkan Nikseresht , Shohreh Namazi

Circulant matrices over finite fields and over commutative finite chain rings have been of interest due to their nice algebraic structures and wide applications. In many cases, such matrices over rings have a closed connection with diagonal…

Rings and Algebras · Mathematics 2020-07-29 Somphong Jitman

Let $\mathcal{R}_e$ be a finite commutative chain ring with nilpotency index $e \geq 2.$ In this paper, all repeated-root constacyclic codes of arbitrary lengths over $\mathcal{R}_{2},$ their sizes and their dual codes are determined. As an…

Commutative Algebra · Mathematics 2017-09-25 Anuradha Sharma , Tania Sidana

A famous result due to I. M. Isaacs states that if a commutative ring $R$ has the property that every prime ideal is principal, then every ideal of $R$ is principal. This motivates ring theorists to study commutative rings for which every…

Commutative Algebra · Mathematics 2022-08-18 R. Nikandish , M. J. Nikmehr , A. Yassine

In this paper we investigate the structure of repeated root constacyclic codes of length $2^amp^r$ over $\mathbb{F}_{p^s}$ with $a\geq1$ and $(m,p)=1$. We characterize the codes in terms of their generator polynomials. This provides simple…

Information Theory · Computer Science 2015-05-05 Aicha Batoul , Kenza Guenda , T. Aaron Gulliver

The main result of this paper is that all antichains are finite in the poset of monomial ideals in a polynomial ring, ordered by inclusion. We present several corollaries of this result, both simpler proofs of results already in the…

Commutative Algebra · Mathematics 2007-05-23 Diane Maclagan

In this paper, we investigate polycyclic codes associated with a trinomial of arbitrary degree $n$ over a finite chain ring $ R.$ We extend the concepts of $ n $-isometry and $ n $-equivalence known for constacyclic codes to this class of…

Information Theory · Computer Science 2025-03-18 Abdelghaffar Chibloun , Hassan Ou-azzou , Edgar Martínez-Moro , Mustapha Najmeddine

Let $\mathbb{F}_{q}$ be a finite field of cardinality $q$, $R=\mathbb{F}_{q}[u]/\langle u^4\rangle=\mathbb{F}_{q}+u\mathbb{F}_{q}+u^2\mathbb{F}_{q}+u^3\mathbb{F}_{q}$ $(u^4=0)$ which is a finite chain ring, and $n$ be a positive integer…

Information Theory · Computer Science 2015-11-10 Yuan Cao , Yonglin Cao , Jian Gao

This study aims to determine the algebraic structures of $\alpha$-constacyclic codes of length $3p^s$ over the finite commutative non-chain ring $\mathcal{R}=\frac{\mathbb{F}_{p^m}[u, v]}{\langle u^2, v^2, uv-vu\rangle}$, for a prime $p…

Combinatorics · Mathematics 2025-04-03 Divya Acharya , Prasanna Poojary , Vadiraja Bhatta G R

In this paper, we define Abelian and consta-Abelian polyadic codes over rings defined as affine algebras over chain rings. For that aim, we use the classical construction via splittings and multipliers of the underlying Abelian group. We…

Information Theory · Computer Science 2023-01-02 Gülsüm Gözde Yılmazgüç , Javier de la Cruz , Edgar Martínez-Moro

The purpose of this article is to study constacyclic codes of length $np^s$ over $R^t:=\frac{\mathbb{F}_{p^m}[u]}{\langle u^t \rangle },$ where $t$ is a natural number and $\gcd(n,p)=1$. We give generators of all the ideals of…

Information Theory · Computer Science 2026-05-13 Akanksha Tiwari , Pramod Kanwar , Ritumoni Sarma

In this paper, we study skew constacyclic codes over the ring $\mathbb{Z}_{q}R$ where $R=\mathbb{Z}_{q}+u\mathbb{Z}_{q}$, $q=p^{s}$ for a prime $p$ and $u^{2}=0$. We give the definition of these codes as subsets of the ring…

Information Theory · Computer Science 2018-10-16 Ahlem Melakhessou , Nuh Aydin , Kenza Guenda

Let $\mathbb{F}_{2^m}$ be a finite field of cardinality $2^m$, $\lambda$ and $k$ be integers satisfying $\lambda,k\geq 2$ and denote $R=\mathbb{F}_{2^m}[u]/\langle u^{2\lambda}\rangle$. Let $\delta,\alpha\in \mathbb{F}_{2^m}^{\times}$. For…

Information Theory · Computer Science 2019-05-10 Yuan Cao , Yonglin Cao , Hai Q. Dinh , Songsak Sriboonchitta , Guidong Wang

For a commutative ring R we investigate the property that the sets of minimal primes of finitely generated ideals of R is always finite. We prove this property passes to polynomial ring extensions (in an arbitrary number of variables) over…

Commutative Algebra · Mathematics 2007-05-23 Thomas Marley

Let q be a prime power and F_q be a finite field. In this paper, we study constacyclic codes over the ring F_q+ u F_q +v F_q+ u v F_q, where u^2=u, v^2=v and uv=vu. We characterized the generator polynomials of constacyclic codes and their…

Information Theory · Computer Science 2016-05-03 Joël Kaboré , Mohammed E. Charkani

In this paper, the cyclic codes of length $n$, where $n$ is odd with certain restrictions, over a finite chain ring $R$, have been studied using the structure of group algebra approach. The primitive idempotents of $RG$ of a finite cyclic…

Rings and Algebras · Mathematics 2025-09-22 Seema Antil , Gurleen Kaur , Manju Khan

In this paper, we construct several infinite families of $q$-ary constacyclic codes over a finite field $\mathbb{F}_q$ with length $n$, dimension around $n/2$, and minimum distance at least $cn/\log_q n$ for some positive constant $c$. They…

Information Theory · Computer Science 2026-05-29 Zekai Chen , Min Sha

Let $\mathbb{Z}_p$ be the ring of integers modulo a prime number $p$ where $p-1$ is a quadratic residue modulo $p$. This paper presents the study of constacyclic codes over chain rings $\mathcal{R}=\frac{\mathbb{Z}_p[u]}{\langle…

Information Theory · Computer Science 2022-12-27 Indibar Debnath , Ashutosh Singh , Om Prakash , Abdollah Alhevaz

Constacyclic codes are important classes of linear codes that have been applied to the construction of quantum codes. Six new families of asymmetric quantum codes derived from constacyclic codes are constructed in this paper. Moreover, the…

Information Theory · Computer Science 2014-04-01 Liqi Wang , Shixin Zhu

Let $\mathbb{F}_p$ be a finite field and $u$ be an indeterminate. This article studies $(1-2u^k)$-constacyclic codes over the ring $\mathcal{R}=\mathbb{F}_p+u\mathbb{F}_p+u^2\mathbb{F}_p+u^{3}\mathbb{F}_{p}+\cdots+u^{k}\mathbb{F}_{p}$ where…

Information Theory · Computer Science 2019-04-18 Zahid Raza , Amrina Rana