3 papers
math.FA2019
Weighted weak group inverse for Hilbert space operators
Dijana Mosic, Daochang Zhang
We present the weighted weak group inverse, which is a new generalized inverse of operators between two Hilbert spaces, introduced to extend weak group inverse for square matrices.…
math.RA2018
On the existence of group inverses of Peirce corner matrices
Daochang Zhang, Dijana Mosic, Tin-Yau Tam
We give some statements that are equivalent to the existence of group inverses of Peirce corner matrices of a block matrix and its generalized Schur complements. As ap…
math.RA2017
Drazin inverses of the sum of four matrices and its applications
Daochang Zhang, Dijana Mosi\' c, Li Guo
Our aim is to establish relations between Drazin inverses of the pesudo-block matrix and the block matrix composed of , where . Based on the relatio…