English

Irreducibility of generalized Fibonacci polynomials

Number Theory 2022-02-17 v1

Abstract

A second order polynomial sequence is of Fibonacci-type Fn\mathcal{F}_{n} (Lucas-type Ln\mathcal{L}_{n}) if its Binet formula has a structure similar to that for Fibonacci (Lucas) numbers. Under certain conditions these polynomials are irreducible if and only if nn is a prime number. For example, the Fibonacci polynomials, Pell polynomials, Fermat polynomials, Lucas polynomials, Pell-Lucas polynomials, Fermat-Lucas polynomials are irreducible when nn is a prime number; and Chebyshev polynomials (second kind), Morgan-Voyce polynomials (Fibonacci type), and Vieta polynomials are reducible when nn is a prime number. In this paper we give some theorems to determine whether the Fibonacci type polynomials and Lucas type polynomials are irreducible when nn is prime.

Keywords

Cite

@article{arxiv.2202.08122,
  title  = {Irreducibility of generalized Fibonacci polynomials},
  author = {Rigoberto Florez and J. C. Saunders},
  journal= {arXiv preprint arXiv:2202.08122},
  year   = {2022}
}

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R2 v1 2026-06-24T09:41:07.223Z