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The trace of 2-primitive elements of finite fields

Volume 192 / 2020

Stephen D. Cohen, Giorgos Kapetanakis Acta Arithmetica 192 (2020), 397-419 MSC: Primary 11T30; Secondary 11T06. DOI: 10.4064/aa190307-23-5 Published online: 29 November 2019

Abstract

Let be a prime power and n, r integers such that r\,|\, q^n-1. An element of \mathbb F _{q^n} of multiplicative order (q^n-1)/r is called r-primitive. For any odd prime power q, we show that there exists a 2-primitive element of \mathbb F _{q^n} with arbitrarily prescribed \mathbb F _q-trace when n\geq 3. Also we explicitly describe the values that the trace of such elements may have when n=2.

Authors

  • Stephen D. Cohen6 Bracken Road
    Portlethen
    Aberdeen AB12 4TA, Scotland, UK
    e-mail
  • Giorgos KapetanakisDepartment of Mathematics
    and Applied Mathematics
    University of Crete
    Voutes Campus
    70013 Heraklion, Greece
    e-mail

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