Submatrices of four dimensional summability matrices
Author
Nuray, Fatih
Patterson, Richard F.
Full text
https://revistas.ufro.cl/ojs/index.php/cubo/article/view/118110.4067/S0719-06462015000200006
Abstract
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.