DOI QR코드

DOI QR Code

LOCAL SPECTRAL THEORY

  • Received : 2019.09.30
  • Accepted : 2019.11.28
  • Published : 2020.05.30

Abstract

For any Banach spaces X and Y, let L(X, Y) denote the set of all bounded linear operators from X to Y. Let A ∈ L(X, Y) and B, C ∈ L(Y, X) satisfying operator equation ABA = ACA. In this paper, we prove that AC and BA share the local spectral properties such as a finite ascent, a finite descent, property (K), localizable spectrum and invariant subspace.

Keywords

References

  1. P. Aiena, Fredholm and local spectral theory, with application to multipliers, Kluwer Acad. Publishers, 2004.
  2. P. Aiena and M. Gonzalez, On the Dunford property (C) for bounded linear operators RS and SR, Integral Equations Operator Theory 70 (2011), 561-568. https://doi.org/10.1007/s00020-011-1875-2
  3. P. Aiena and V. Miller, The localized single-valued extension property and Riesz operators, Proc. Amer. Soc. 143 (2015), 2051-2055.
  4. P. Aiena and O. Monsalve, Operators which do not have the single valued extension property, J. Math. Anal. Appl. 250 (2000), 435-448. https://doi.org/10.1006/jmaa.2000.6966
  5. C. Benhida and E.H. Zerouali, Local spectral theory of linear operators RS and SR, Integral Equations Operator Theory 54 (2006), 1-8. https://doi.org/10.1007/s00020-005-1375-3
  6. I. Colojoara and C. Foias, Theory of Generalized Spectral Operators, Gordon and Breach, New York, 1968.
  7. N. Dunford, Spectral theory II. Resolution of the identity, Pacific J. Math. 2 (1952), 559-614. https://doi.org/10.2140/pjm.1952.2.559
  8. N. Dunford, Spectral operators, Pacific J. Math. 4 (1954), 321-354. https://doi.org/10.2140/pjm.1954.4.321
  9. J. Eschmeier and B. Prunaru, Invariant subspaces and localizable spectrum, Integral Equations Operator Theory 55 (2002), 461-471.
  10. J.K. Finch, The single valued extension property on a Banach space, Pacific J. Math. 58 (1975), 61-69. https://doi.org/10.2140/pjm.1975.58.61
  11. H. Heuser, Functional Analysis, Wiley Interscience, Chichester, 1982.
  12. M. Mbekhta, Generalisation de la decomposition de Kato aux operateurs paranormaux et spectraux, Glasgow Math. J. 29 (1987), 159-175. https://doi.org/10.1017/S0017089500006807
  13. T.L. Miller, V.G. Miller, and M.M. Neumann, On operators with closed analytic core, Rend. Circ. Mat. Palermo 51 (2002), 495-502. https://doi.org/10.1007/BF02871857
  14. V. Muller and M.M. Neumann, Localizable spectrum and bounded local resolvent functions, Archiv der Mathemati 92 (2008), 155-165.
  15. K.B. Laursen and M.M. Neumann, Asymptotic intertwining and spectral inclusions on Banach spaces, Czech. Math. J. 43 (1993), 483-497. https://doi.org/10.21136/CMJ.1993.128413
  16. K.B. Laursen and M.M. Neumann, An Introduction to Local Spectral Theory, Clarendon Press, Oxford Science Publications, Oxford, 2000.
  17. B. Prunaru, Invariant subspaces for bounded operators with large localizable spectrum, Proc. Amer. Soc. 129 (2001), 2365-2372. https://doi.org/10.1090/S0002-9939-01-05971-8
  18. Ch. Schmoeger, On isolated points of the spectrum of a bounded linear operators, Proc. Amer. Soc. 117 (1993), 715-719. https://doi.org/10.1090/S0002-9939-1993-1111438-8
  19. J.K. Yoo, The spectral mapping theorem for localizable spectrum, Far East J. Math. Sci. 100 (2016), 491-504.
  20. J.K. Yoo, Some results on local spectral theory, Far East J. Math. Sci. 103 (2018), 1975-1987. https://doi.org/10.17654/ms103121975
  21. Q. Zeng, Q. Jiang and H. Zhong, Spectra originating from semi-B-Fredholm theory and commuting perturbations, Studia Math. 219 (2013), 1-18. https://doi.org/10.4064/sm219-1-1
  22. Q. Zeng and H. Zhong, Common properties of bounded linear operators AC and BA, J. Math. Anal. 414 (2014), 553-560. https://doi.org/10.1016/j.jmaa.2014.01.021