In this paper, we show that a matrix that maps l′′ into l′′ can be obtained from any RH-regular matrix by the deletion of rows. Also a four dimensional conservative matrix can be obtained by the deletion of rows from a matrix that preserves boundedness. We will use these techniques to derive a sufficient condition for a four dimensional matrix to sum an unbounded sequence.
@article{1181,
title = {Submatrices of Four Dimensional Summability Matrices},
journal = {CUBO, A Mathematical Journal},
volume = {17},
year = {2015},
language = {en},
url = {http://dml.mathdoc.fr/item/1181}
}
Nuray, Fatih; Patterson, Richard F. Submatrices of Four Dimensional Summability Matrices. CUBO, A Mathematical Journal, Tome 17 (2015) 7 p. http://gdmltest.u-ga.fr/item/1181/