本文研究定义于复Banach空间上的四分块算子矩阵的Drazin逆的表示,此问题是1979年S.L.Campbell和C.D.Meyer提出的公开问题.结果表明主要定理是最近的某些研究进展在不同程度的推广,此外还举例说明了结果的有效性.
In this paper, we investigate the representation of Drazin inverse of 2 × 2 block operator matrices defined on complex Banach spaces, which is an open problem proposed by S.L. Campbell and C.D. Meyer. It is shown that the main results extend some recent works on this topic. Moreover, an illustrating example is presented to show the effectiveness of our results.