Autor segons l'article: Bras-Amoros M; Castellanos AS; Quoos L
Departament: Enginyeria Informàtica i Matemàtiques
Autor/s de la URV: Bras Amoros, Maria
Paraules clau: Weierstrass semigroup Upper bound Standards Poles and zeros Linear codes Isometry-dual property Geometry Function field Flag of codes Dual code Codes Codecs Ag code weights points minimum distance isometry-dual property goppa codes function field flag of codes dual code curves construction bounds ag codes
Resum: A flag of codes C0 ⊊ C1 ⊊ ... ⊊ Cs ⊆ Fnq is said to satisfy the isometry-dual property if there exists x ∈ (F*q)n such that the code Ci is x-isometric to the dual code C⊥s-i for all i = 0, ..., s. For P and Q rational places in a function field F, we investigate the existence of isometry-dual flags of codes in the families of two-point algebraic geometry codes CL(D, a0P + bQ) ⊊ CL(D, a1P + bQ) ⊊ ...⊊ CL(D, asP + bQ), where the divisor D is the sum of pairwise different rational places of F and P,Q are not in supp(D). We characterize those sequences in terms of b for general function fields. We then apply the result to the broad class of Kummer extensions F defined by affine equations of the form ym = f(x), for f(x) a separable polynomial of degree r, where gcd(r,m) = 1. For P the rational place at infinity and Q the rational place associated to one of the roots of f(x), and for D an Aut(F/Fq)-invariant sum of rational places of F, such that P,Q ∉ suppD, it is shown that the flag of two-point algebraic geometry codes has the isometry-dual property if and only if m divides 2b + 1. At the end we illustrate our results by applying them to two-point codes over several well know function fields.
Àrees temàtiques: Matemática / probabilidade e estatística Library and information sciences Information systems Engineering, electrical & electronic Engenharias iv Engenharias iii Computer science, information systems Computer science applications Ciencias sociales Ciência da computação Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: maria.bras@urv.cat
Identificador de l'autor: 0000-0002-3481-004X
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://ieeexplore.ieee.org/document/9600824
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Ieee Transactions On Information Theory. 68 (2): 828-838
Referència de l'ítem segons les normes APA: Bras-Amoros M; Castellanos AS; Quoos L (2022). The Isometry-Dual Property in Flags of Two-Point Algebraic Geometry Codes. Ieee Transactions On Information Theory, 68(2), 828-838. DOI: 10.1109/TIT.2021.3124630
DOI de l'article: 10.1109/TIT.2021.3124630
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications