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arXiv · 1802.01739

Irreducible factorization of translates of reversed Dickson polynomials over finite fields

Ron Evans·Mark Van Veen
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Abstract

Let $F$ be a field of $q$ elements, where $q$ is a power of an odd prime. Fix $n = (q+1)/2$. For each $s \in F$, we describe all the irreducible factors over $F$ of the polynomial $g_s(y): = y^n + (1-y)^n -s$, and we give a necessary and sufficient condition on $s$ for $g_s(y)$ to be irreducible.

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Ron Evans, Mark Van Veen. 2018-02-06. Irreducible factorization of translates of reversed Dickson polynomials over finite fields. https://arxiv.org/abs/1802.01739

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