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

Anuradha Sharma, Saroj Rani

Let $p$ be an odd prime, and let $m$ be a positive integer satisfying $p^m\equiv 3(\text{mod }4).$ Let ${\mathbb{F}}_{p^m}$ be the finite field with $p^m$ elements, and let $R=\mat…