Perturbations of Drazin invertible operators

作者：Yang, Kaifan^*; Du, Hongke

来源：Frontiers of Mathematics in China, 2015, 10(1): 199-208.

DOI：10.1007/s11464-014-0436-9

• Drazin inverse
• small norm perturbation
• finite rank perturbation

The necessary and sufficient conditions for the small norm perturbation of a Drazin invertible operator to be still Drazin invertible and the sufficient conditions for the finite rank perturbation of a Drazin invertible operator to be still Drazin invertible are established.

• 出版日期2015-2
• 单位陕西师范大学; 陕西理工大学