References
- [1] M. Burgos, A. Kaidi, M. Mbekhta, and M. Oudghiri The descent spectrum and perturbations, J. Operator Theory 56:2(2006), 259-271.
- [2] H. Elbjaoui and E. H. Zerouali. Local spectral theory for 2 × 2 operator matrices, IJMMS (2003):42, 2667-2672.10.1155/S0161171203012043
- [3] K.B.Laursen and P. Vrbová Some remarks on the surjectivy spectrum of linear operators, Czech. Math. J. 39 (1989), 730-739.10.21136/CMJ.1989.102350
- [4] Koliha JJ. A Generalized Drazin inverse, Glasgow Math. J. 1996, 38:367-81.10.1017/S0017089500031803
- [5] A. Tajmouati, M. Karmouni and S. Alaoui Chrifi Limit points for Browder spectrum of operator matrices. Rend. Circ. Mat. Palermo, II. Ser. DOI 10.1007/s12215-019-00410-7.
- [6] A.E. TAYLOR, D.C. LAY Introduction to Functional Analysis, Wiley, New York-Chichester-Brisbane 1980.
- [7] H. Zariouh and H. Zguitti. On Pseudo B-Weyl operators and generalized Drazin invertible for operator matrices, Linear and Multilinear Algebra, Volume 64, issue 7, (2016), 1245-1257.10.1080/03081087.2015.1082959
- [8] E. H. Zerouali and H. Zguitti. Perturbation of spectra of operator matrices and local spectral theory, J Math Anal Appl, 2006, 324: 992-1005.10.1016/j.jmaa.2005.12.065
- [9] S. Zhang, H. Zhong and L. Lin. Generalized Drazin spectrum of operator matrices, Appl. Math. J. Chinese Univ. 29 (2) (2014), 162-170.10.1007/s11766-014-3142-1
- [10] S. F. Zhang, H. J. Zhang and J. D. Wu. Spectra of upper triangular operator matrices, Acta Math Sinica (in Chinese), 2011, 54: 41-60.