3 papers
math.RA2023
One sided Star and Core orthogonality of matrices
D. E. Ferreyra, F. E. Levis, Saroj B. Malik +1
We investigate two one-sided orthogonalities of matrices, the first of which is left (right) -orthogonality for rectangular matrices and the other is left (right) core-orthogona…
math.RA2023
The -weak core inverse
D. E. Ferreyra, Saroj B. Malik
Since the day the core inverse has been known in a paper of Bakasarly and Trenkler, it has been widely researched. So far, there are four generalizations of this inverse for the ca…
math.RA2021
Relative EP matrices
D. E. Ferreyra, Saroj B. Malik
The purpose of the present work is to introduce the concept of relative EP matrix of a rectangular matrix relative to a partial isometry (or, in short, -EP matrix) hitherto unkn…