On Counting Subring-Subcodes of Free Linear Codes Over Finite Principal Ideal Rings

Ramakrishna Bandi, Alexandre Fotue Tabue, Edgar Martínez-Moro

Let $R$ be a finite principal ideal ring and $S$ the Galois extension of $R$ of degree $m$. For $k$ and $k_0$, positive integers we determine the number of free $S$-linear codes $B…