Maximal column rank preservers of integer matrices
Commun. Korean Math. Soc. 2007 Vol. 22, No. 2, 195-205 Printed June 1, 2007
Seok-Zun Song, Kyung-Tae Kang Cheju National University, Cheju National University
Abstract : The maximal column rank of an $m\times n$ matrix $A$ over the ring of integers, is the maximal number of the columns of $A$ that are weakly independent. We characterize the linear operators that preserve the maximal column ranks of integer matrices.
Keywords : maximal column rank; linear operator; absolute permutation matrix.