A class of repeated-root constacyclic codes over ${\mathbb{F}}_{p^m}[u]/⟨u^e⟩$ of Type $2$

Yuan Cao, Yonglin Cao, Hai Q. Dinh +3

Let ${\mathbb{F}}_{p^m}$ be a finite field of cardinality $p^m$ where $p$ is an odd prime, $n$ be a positive integer satisfying $\gcd (n,p)=1$, and denote $R=\mathbb{F}_{p^m}[u]/…