In this paper we give expressions for the generalized Drazin inverse of a (2,2,0) operator matrix and a $2\times2$ operator matrix under certain circumstances, which generalizes and unifies several results in the literature.
Generalized Drazin inverse, operator matrix, Banach space
"Representations for generalized Drazin inverse of operator matrices over a Banach space,"
Turkish Journal of Mathematics: Vol. 40:
2, Article 17.
Available at: https://journals.tubitak.gov.tr/math/vol40/iss2/17