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Erschienen in: Applicable Algebra in Engineering, Communication and Computing 5/2013

01.11.2013 | Original Paper

On the dual minimum distance and minimum weight of codes from a quotient of the Hermitian curve

verfasst von: Edoardo Ballico, Alberto Ravagnani

Erschienen in: Applicable Algebra in Engineering, Communication and Computing | Ausgabe 5/2013

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Abstract

In this paper we study evaluation codes arising from plane quotients of the Hermitian curve, defined by affine equations of the form \(y^q+y=x^m,\,q\) being a prime power and \(m\) a positive integer which divides \(q+1\). The dual minimum distance and minimum weight of such codes are studied from a geometric point of view. In many cases we completely describe the minimum-weight codewords of their dual codes through a geometric characterization of the supports, and provide their number. Finally, we apply our results to describe Goppa codes of classical interest on such curves.

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Fußnoten
1
Here the subscript red denotes the reduction of a zero-dimensional scheme.
 
2
We recall that \(\text{ Res }_L (A \cup E) = \text{ Res }_L (E)\), because \(A\subseteq L\), and \(\deg (\text{ Res }_L (E)) = \deg (E) -\deg (L \cap E)\).
 
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Metadaten
Titel
On the dual minimum distance and minimum weight of codes from a quotient of the Hermitian curve
verfasst von
Edoardo Ballico
Alberto Ravagnani
Publikationsdatum
01.11.2013
Verlag
Springer Berlin Heidelberg
Erschienen in
Applicable Algebra in Engineering, Communication and Computing / Ausgabe 5/2013
Print ISSN: 0938-1279
Elektronische ISSN: 1432-0622
DOI
https://doi.org/10.1007/s00200-013-0206-z

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