A New Proof of the Hansen—Mullen Irreducibility Conjecture
Canadian journal of mathematics, Tome 70 (2018) no. 6, pp. 1373-1389
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We give a new proof of the Hansen–Mullen irreducibility conjecture. The proof relies on an application of a (seemingly new) sufficient condition for the existence of elements of degree $n$ in the support of functions on finite fields. This connection to irreducible polynomials is made via the least period of the discrete Fourier transform $\left( \text{DFT} \right)$ of functions with values in finite fields. We exploit this relation and prove, in an elementary fashion, that a relevant function related to the $\text{DFT}$ of characteristic elementary symmetric functions (that produce the coefficients of characteristic polynomials) satisfies a simple requirement on the least period. This bears a sharp contrast to previous techniques employed in the literature to tackle the existence of irreducible polynomials with prescribed coefficients.
Mots-clés :
11T06, irreducible polynomial, primitive polynomial, Hansen–Mullen conjecture, symmetric function, q-symmetric, discrete Fourier transform, finite field
Tuxanidy, Aleksandr; Wang, Qiang. A New Proof of the Hansen—Mullen Irreducibility Conjecture. Canadian journal of mathematics, Tome 70 (2018) no. 6, pp. 1373-1389. doi: 10.4153/CJM-2017-022-1
@article{10_4153_CJM_2017_022_1,
author = {Tuxanidy, Aleksandr and Wang, Qiang},
title = {A {New} {Proof} of the {Hansen{\textemdash}Mullen} {Irreducibility} {Conjecture}},
journal = {Canadian journal of mathematics},
pages = {1373--1389},
year = {2018},
volume = {70},
number = {6},
doi = {10.4153/CJM-2017-022-1},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2017-022-1/}
}
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