
The author proves that for any primitive element \(b\) of \(\mathbb F_q\) there exist primitive polynomials of degree \(3\) and \(4\) with zero trace and norm \(b\) with the only exceptions \(n=3\) and \(q=4\) or \(7\). Combining this with earlier results of \textit{S. Fan} and \textit{X. Wang} [Finite Fields Appl. 15, No. 6, 682--730 (2009; Zbl 1218.11109)] for \(n\geq 5\), \textit{S. D. Cohen} and \textit{S. Huczynska} [Acta Arith. 109, No. 4, 359--385 (2003; Zbl 1074.11064)]for \(n=4\) and \(a\neq 0\) and [Trans. Am. Math. Soc. 355, No. 8, 3099--3116 (2003; Zbl 1022.11064)] for \(n=3\) and \(a\neq 0\) this completes the proof of the following result: Let \(b\) be a primitive element of \(\mathbb F_q\) and \(a\in\mathbb F_q\). Then for any integer \(n\geq 3\), there exists a primitive polynomial of degree \(n\) over \(\mathbb F_q\) with trace \(a\) and norm \(b\) with the only exceptions when \(n=3\), \(a=0\), and \(q=4\) or \(7\).
Other character sums and Gauss sums, Prescribed norm, Algebra and Number Theory, Applied Mathematics, Finite field, primitive polynomial, Structure theory for finite fields and commutative rings (number-theoretic aspects), Zero trace, Polynomials over finite fields, Theoretical Computer Science, prescribed norm, zero trace, Primitive polynomial, finite field, Engineering(all)
Other character sums and Gauss sums, Prescribed norm, Algebra and Number Theory, Applied Mathematics, Finite field, primitive polynomial, Structure theory for finite fields and commutative rings (number-theoretic aspects), Zero trace, Polynomials over finite fields, Theoretical Computer Science, prescribed norm, zero trace, Primitive polynomial, finite field, Engineering(all)
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