On a Class of Ternary Inclusion-Exclusion Polynomials

Details On a Class of Ternary Inclusion-Exclusion Polynomials On a Class of Ternary Inclusion-Exclusion Polynomials

2010-06-02

arxiv.org/abs/1006.0522v1

Mathematics

Number Theory

12 pages

Scientific paper

A ternary inclusion-exclusion polynomial is a polynomial of the form \[ Q_{{p,q,r}}=\frac{(z^{pqr}-1)(z^p-1)(z^q-1)(z^r-1)} {(z^{pq}-1)(z^{qr}-1)(z^{rp}-1)(z-1)}, \] where $p$, $q$, and $r$ are integers $\ge3$ and relatively prime in pairs. This class of polynomials contains, as its principle subclass, the ternary cyclotomic polynomials corresponding to restricting $p$, $q$, and $r$ to be distinct odd prime numbers. Our object here is to continue the investigation of the relationship between the coefficients of $Q_{{p,q,r}}$ and $Q_{{p,q,s}}$, with $r\equiv s\pmod{pq}$. More specifically, we consider the case where $1\le s<\max(p,q)

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