ELA, Volume 9, pp. 129-131, August 2002, abstract.

Integral Representation of the Drazin Inverse

N. Castro Gonzalez, J.J. Koliha, and Yimin Wei

In this note we present an integral representation for 
the Drazin inverse A^D of a complex square matrix A. 
This representation does not require any restriction 
on its eigenvalues.