TY - JOUR
T1 - On the second Feng-Rao distance of Algebraic Geometry codes related to Arf semigroups
AU - Farrán, José I.
AU - García-Sánchez, Pedro A.
AU - Heredia, Benjamín A.
N1 - The first author is supported by the Project MTM2015-65764-C3-1-P (MINECO/FEDER). The second author is supported by the Project MTM2014-55367-P, which is funded by Ministerio de Economia y Competitividad and Fondo Europeo de Desarrollo Regional FEDER, and by the Junta de Andalucia Grant Number FQM-343. The third author is supported by the Fundacao para a Ciencia e a Tecnologia (Portuguese Foundation for Science and Technology) through the Project UID/MAT/00297/2013 (Centro de Matematica e Aplicacoes).
PY - 2018/12
Y1 - 2018/12
N2 - We describe the second (generalized) Feng-Rao distance for elements in an Arf numerical semigroup that are greater than or equal to the conductor of the semigroup. This provides a lower bound for the second Hamming weight for one point AG codes. In particular, we can obtain the second Feng-Rao distance for the codes defined by asymptotically good towers of function fields whose Weierstrass semigroups are inductive. In addition, we compute the second Feng-Rao number, and provide some examples and comparisons with previous results on this topic. These calculations rely on Apéry sets, and thus several results concerning Apéry sets of Arf semigroups are presented.
AB - We describe the second (generalized) Feng-Rao distance for elements in an Arf numerical semigroup that are greater than or equal to the conductor of the semigroup. This provides a lower bound for the second Hamming weight for one point AG codes. In particular, we can obtain the second Feng-Rao distance for the codes defined by asymptotically good towers of function fields whose Weierstrass semigroups are inductive. In addition, we compute the second Feng-Rao number, and provide some examples and comparisons with previous results on this topic. These calculations rely on Apéry sets, and thus several results concerning Apéry sets of Arf semigroups are presented.
KW - AG codes
KW - Arf semigroups
KW - Generalized Hamming weights
KW - Inductive semigroups
KW - Order bounds
KW - Towers of function fields
UR - http://www.scopus.com/inward/record.url?scp=85045248919&partnerID=8YFLogxK
U2 - 10.1007/s10623-018-0483-4
DO - 10.1007/s10623-018-0483-4
M3 - Article
AN - SCOPUS:85045248919
SN - 0925-1022
VL - 86
SP - 1
EP - 24
JO - Designs, Codes, and Cryptography
JF - Designs, Codes, and Cryptography
IS - 12
ER -