Commun. Korean Math. Soc. 1999 Vol. 14, No. 2, 311-318
Si-Ju Kim, Taeg-Young Choi Andong University, Andong University
Abstract : Let $A$ be an $n\times n$ (0,1) matrix. Let $f(A)$ denote the smallest nonnegative integer $k$ such that $perA[\alpha|\beta]>0$ and $A(\alpha|\beta)$ is permutation equivalent to a lower triangular matrix for some $\alpha,~ \beta \in Q_{k,n}$. In this case $f(A)$ is called the feedback number of $A$. In this paper, feedback numbers of some maximal convertible (0,1) matrices are studied.
