Publication date: 31 December 2021
Volume: Vol 56
Issue: Svezak 2
Pages: 241-261
DOI: https://doi.org/10.3336/gm.56.2.03
Izvorni znanstveni članak
https://doi.org/10.3336/gm.56.2.03
A remark on flat ternary cyclotomic polynomials
Bin Zhang
; School of Mathematical Sciences, Qufu Normal University, 273165 Qufu, P. R. China
Let \(\Phi_n(x)\) be the \(n\)-th cyclotomic
polynomial. In this paper, for odd primes \(p\lt q \lt r\)
with \(q\equiv \pm1\pmod p\) and \(8r\equiv \pm1\pmod {pq}\), we
prove that the coefficients of \(\Phi_{pqr}(x)\) do not exceed \(1\) in modulus if and only if
(i) \(p=3\), \(q\geq 19\) and \(q\equiv 1\pmod 3\) or
(ii) \(p=7\), \(q\geq83\) and \(q\equiv -1\pmod 7\).
Flat cyclotomic polynomial, ternary cyclotomic polynomial, coefficients of cyclotomic polynomial
267203
23.12.2021.
Posjeta: 655 *