Abstract
In this paper, we show that the generalized Kato spectrum of a bounded operator in a Banach space is invariant under perturbation by commuting quasi-nilpotent operators, and the Kato spectrum is stable under additive commuting nilpotent perturbations. Our results are used to give an equivalent definition of the generalized Kato spectrum.
References
[1] P. Aiena, Fredholm and Local Spectral Theory, with Applications to Multipliers, Kluwer Academic, Dordrecht, 2004. Search in Google Scholar
[2] C. Apostol, The reduced minimum modulus, Michigan Math. J. 32 (1985), no. 3, 279–294. 10.1307/mmj/1029003239Search in Google Scholar
[3] M. Benharrat and B. Messirdi, On the generalized Kato spectrum, Serdica Math. J. 37 (2011), no. 4, 283–294. Search in Google Scholar
[4] M. Benharrat and B. Messirdi, Essential spectrum: A brief survey of concepts and applications, Azerb. J. Math. 2 (2012), no. 1, 37–65. Search in Google Scholar
[5] M. Benharrat and B. Messirdi, Relationship between the Kato essential spectrum and a variant of essential spectrum, Gen. Math. Rev. 20 (2012), no. 4, 71–88. Search in Google Scholar
[6] S. Goldberg, Unbounded Linear Operators: Theory and Applications, McGraw-Hill, New York, 1966. Search in Google Scholar
[7] S. Grabiner, Ascent, descent and compact perturbations, Proc. Amer. Math. Soc. 71 (1978), no. 1, 79–80. 10.1090/S0002-9939-1978-0495841-7Search in Google Scholar
[8] Q. Jiang and H. Zhong, Generalized Kato decomposition, single-valued extension property and approximate point spectrum, J. Math. Anal. Appl. 356 (2009), no. 1, 322–327. 10.1016/j.jmaa.2009.03.017Search in Google Scholar
[9] Q. Jiang and H. Zhong, Components of generalized Kato resolvent set and single-valued extension property, Front. Math. China 7 (2012), no. 4, 695–702. 10.1007/s11464-012-0207-4Search in Google Scholar
[10] M. A. Kaashoek and D. C. Lay, Ascent, descent, and commuting perturbations, Trans. Amer. Math. Soc. 169 (1972), 35–47. 10.1090/S0002-9947-1972-0312299-8Search in Google Scholar
[11] T. Kato, Perturbation Theory for Linear Operators, Grundlehren Math. Wiss. 132, Springer, New York, 1966. 10.1007/978-3-662-12678-3Search in Google Scholar
[12] J. J. Koliha, A generalized Drazin inverse, Glasg. Math. J. 38 (1996), no. 3, 367–381. 10.1017/S0017089500031803Search in Google Scholar
[13] V. Kordula and V. Müller, The distance from the Apostol spectrum, Proc. Amer. Math. Soc. 124 (1996), no. 10, 3055–3061. 10.1090/S0002-9939-96-03306-0Search in Google Scholar
[14] J.-P. Labrousse, Les opérateurs quasi Fredholm: une généralisation des opérateurs semi Fredholm, Rend. Circ. Mat. Palermo (2) 29 (1980), no. 2, 161–258. 10.1007/BF02849344Search in Google Scholar
[15] M. Mbekhta, Généralisation de la décomposition de Kato aux opérateurs paranormaux et spectraux, Glasg. Math. J. 29 (1987), no. 2, 159–175. 10.1017/S0017089500006807Search in Google Scholar
[16] V. Müller, On the regular spectrum, J. Operator Theory 31 (1994), no. 2, 363–380. Search in Google Scholar
[17] V. Müller, Spectral Theory of Linear Operators and Spectral Systems in Banach Algebras, 2nd ed., Oper. Theory Adv. Appl. 139, Birkhäuser, Basel, 2007. Search in Google Scholar
[18] V. Rakočević, Generalized spectrum and commuting compact perturbations, Proc. Edinb. Math. Soc. (2) 36 (1993), no. 2, 197–209. 10.1017/S0013091500018332Search in Google Scholar
© 2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Semilinear fractional order integro-differential inclusions with infinite delay
- Quasi-nilpotent perturbations of the generalized Kato spectrum
- Construction and numerical resolution of high-order accuracy decomposition scheme for a quasi-linear evolution equation
- Relations between BV*(q;α) and Λ*BVp classes of functions
- On the constancy of signs and order of magnitude of Fourier–Haar coefficients
- On the oscillatory behavior of solutions of higher order nonlinear fractional differential equations
- Optimal control problem for the equation of vibrations of an elastic plate
- Generalized Hausdorff capacities and their applications
- Approximation by bivariate (p,q)-Baskakov–Kantorovich operators
- A hydromagnetic flow through porous medium near an accelerating plate in the presence of magnetic field
- A note on the Borel types of some small sets
- On some boundary value problems for the heat equation in a non-regular type of a prism of ℝN+1
- Some weighted integral inequalities for differentiable h-preinvex functions
- Computation of minimal homogeneous generating sets and minimal standard bases for ideals of free algebras
- On Baer invariants of pairs of groups
- The Arzelà–Ascoli theorem by means of ideal convergence
- Absolute convergence of multiple Fourier series of a function of p(n)-Λ-BV
Articles in the same Issue
- Frontmatter
- Semilinear fractional order integro-differential inclusions with infinite delay
- Quasi-nilpotent perturbations of the generalized Kato spectrum
- Construction and numerical resolution of high-order accuracy decomposition scheme for a quasi-linear evolution equation
- Relations between BV*(q;α) and Λ*BVp classes of functions
- On the constancy of signs and order of magnitude of Fourier–Haar coefficients
- On the oscillatory behavior of solutions of higher order nonlinear fractional differential equations
- Optimal control problem for the equation of vibrations of an elastic plate
- Generalized Hausdorff capacities and their applications
- Approximation by bivariate (p,q)-Baskakov–Kantorovich operators
- A hydromagnetic flow through porous medium near an accelerating plate in the presence of magnetic field
- A note on the Borel types of some small sets
- On some boundary value problems for the heat equation in a non-regular type of a prism of ℝN+1
- Some weighted integral inequalities for differentiable h-preinvex functions
- Computation of minimal homogeneous generating sets and minimal standard bases for ideals of free algebras
- On Baer invariants of pairs of groups
- The Arzelà–Ascoli theorem by means of ideal convergence
- Absolute convergence of multiple Fourier series of a function of p(n)-Λ-BV