Abstract
Let F q be a finite field of characteristic p. In this paper, by using the index sum method the authors obtain a sufficient condition for the existence of a primitive element \(\alpha \in {F_{{q^n}}}\) such that α + α −1 is also primitive or α + α −1 is primitive and α is a normal element of \({F_{{q^n}}}\) over F q.
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The first author is supported by the National Natural Science Foundation of China (No. 11401408), the Natural Science Foundation of Sichuan Province (No. 14ZA0034) and the Sichuan Normal University Key Project Foundation (No. 13ZDL06). The second author is supported by the National Natural Science Foundation of China (No. 11001170) and the Natural Science Foundation of Shanghai Municipal (No. 13ZR1422500).
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Liao, Q., Li, J. & Pu, K. On the existence for some special primitive elements in finite fields. Chin. Ann. Math. Ser. B 37, 259–266 (2016). https://doi.org/10.1007/s11401-016-0949-5
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DOI: https://doi.org/10.1007/s11401-016-0949-5