Value sets of Lattes maps over finite fields

JOURNAL OF NUMBER THEORY

卷:143

Article

Kucuksakalli, Omer

关键词: Dickson polynomial;    Lattes map;    Elliptic curve;    Complex multiplication;    Permutation;   

DOI  :  10.1016/j.jnt.2014.04.014

来源: Elsevier

【 摘 要 】

We give an alternative computation of the value sets of Dickson polynomials over finite fields by using a singular cubic curve. Our method is not only simpler but also it can be generalized to the non-singular elliptic case. We determine the value sets of Lattes maps over finite fields which are rational functions induced by isogenies of elliptic curves with complex multiplication. (C) 2014 Elsevier Inc. All rights reserved.

【 授权许可】

Free