Abstract
Let \(q\) be a power of a prime number \(p\). Let \(n\) be a positive integer. Let \(\mathbb {F}_{q^n}\) denote a finite field with \(q^n\) elements. In this paper, we consider the existence of the some specific elements in the finite field \(\mathbb {F}_{q^n}\). We get that when \(n\ge 29\), there are elements \(\xi \in \mathbb {F}_{q^n}\) such that \(\xi +\xi ^{-1}\) is a primitive element of \(\mathbb {F}_{q^n}\), and \(\mathrm{Tr}(\xi ) = a, \mathrm{Tr}(\xi ^{-1}) = b\) for any pair of prescribed \(a, b \in \mathbb {F}_q^*\).
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The authors would like to express their grateful thankfulness to the referees for their valuable comments and suggestions which greatly improved the quality of the earlier version of this paper. The research of the work was supported by the NSF of China (No. 11371011).
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Cao, X., Wang, P. Primitive elements with prescribed trace. AAECC 25, 339–345 (2014). https://doi.org/10.1007/s00200-014-0228-1
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DOI: https://doi.org/10.1007/s00200-014-0228-1