The constant term of the minimal polynomial of cos(2π/n) over ℚ

Abstract

Let H(λq) be the Hecke group associated to λq = 2 cos π/q for q ≥ 3 integer. In this paper, we determine the constant term of the minimal polynomial of λq denoted by P*q(x). © 2013 Demirci and Cangül; licensee Springer.