On hereditary irreducibility of some monomial matrices over local rings

Keywords: local ring, Jacobson radical, irreducible matrix, monomial matrix, hereditary irreducible matrix
Published online: 2021-06-19


We consider monomial matrices over a commutative local principal ideal ring $R$ of type $M(t,k,n)=\Phi\left(\begin{smallmatrix}I_k&0\\0\,\,&tI_{n-k}\end{smallmatrix}\right)$, $0<k<n$, where $t$ is a generating element of Jacobson radical $J(R)$ of $R$, $\Phi$ is the companion matrix to $\lambda^n-1$ and $I_k$ is the identity $k\times k$ matrix. In this paper, we indicate a criterion of the hereditary irreducibility of $M(t,k,n)$ in the case $t^{\left[\frac{k\cdot(n-k)}{n}\right]+1}\not=0$.

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How to Cite
Tylyshchak A., Demko M. On Hereditary Irreducibility of Some Monomial Matrices over Local Rings. Carpathian Math. Publ. 2021, 13 (1), 127-133.