<p style='text-indent:20px;'>For any odd prime <inline-formula><tex-math id="M2">\begin{document}$ p $\end{document}</tex-math></inline-formula>, we study constacyclic codes of length id="M3">\begin{document}$ n $\end{document}</tex-math></inline-formula> over the finite commutative non-chain ring id="M4">\begin{document}$ R_{k,m} = \mathbb{F}_{p^...