Let GF(q) be the Galois field of order q"pF, and let m53 be an integer. An explicit formula for the number of GF(qK)-rational points of the Fermat curve XL#Β½L#ZL"0 is given when n divides (qK!1)/(q!1) and p is sufficiently large with respect to (qK!1)/(n(q!1)).
Group Structure on Projective Spaces and Cyclic Codes over Finite Fields
β Scribed by Gilles Lachaud; Isabelle Lucien; Dany-Jack Mercier; Robert Rolland
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 124 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1071-5797
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β¦ Synopsis
We study the geometrical properties of the subgroups of the mutliplicative group of a "nite extension of a "nite "eld endowed with its vector space structure and we show that in some cases the associated projective space has a natural group structure. We construct some cyclic codes related to Reed}Muller codes by evaluating polynomials on these subgroups. The geometrical properties of these groups give a fairly simple description of these codes which are of the Reed}Muller kind.
π SIMILAR VOLUMES
When a lot of books are written on a subject, one of two cases obtains. Either the subject is well understood, and the book is easy to write; such is the case with books on real variables, convexity, projective geometry in the plane, or compact orientable surfaces. Or else, the subject is of great i
The number of points on the curve aY e =bX e +c (abc{0) defined over a finite field F q , q#1 (mod e), is known to be obtainable in terms of Jacobi sums and cyclotomic numbers of order e with respect to this field. In this paper, we obtain explicitly the Jacobi sums and cyclotomic numbers of order e