Units of $\mathbb{Z}{C}_{p^n}$

Raul Antonio Ferraz, Patricia Massae Kitani

Let $p$ be a prime integer and $n,i$ be positive integers such that \linebreak $S=\{-1,\theta ,{\mu }_i=1+\theta +...+{\theta }^{i-1}\mid 1<i<\frac{p^n}{2},gcd(p^n,i)=1\}$ generates the…