On the Eigenvalues of Certain Matrices Over ${\mathbb{Z}}_m$

Liang Feng Zhang

Let $m,n>1$ be integers and ${\mathbb{P}}_{n,m}$ be the point set of the projective $(n-1)$-space (defined by [2]) over the ring ${\mathbb{Z}}_m$of integers modulo $m$. Let $A_{n,m}=(a…