Acta Applicandae Mathematica

, Volume 89, Issue 1–3, pp 155–176 | Cite as

Fredholm Operators, Essential Spectra and Application to Transport Equations

Article

Abstract

In this paper the essential spectra of closed, densely defined linear operators is characterized on a Banach spaces under perturbations of n-strictly power compact operators. Further we apply the obtained results to investigate the essential spectra of one-dimensional transport equation with general boundary conditions and the essential spectra of singular neutron transport equations in bounded geometries.

Key words

transport equation Fredholm operators essential spectra 

Mathematics Subject Classifications (1991)

Primary 47A55, 47D03, 47N20 

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References

  1. 1.
    Dautray, R. and Lions, J. L.: Analyse Mathématique et Calcul Numérique, Masson, Paris, 9, 1988.Google Scholar
  2. 2.
    Diestel, J.: A survey of results related to Dunford–Pettis property, Contemporary Math. 2, Amer. Math. Soc. of Conf. on Integration, Topology and Geometry in Linear Spaces, (1980), 15–60.Google Scholar
  3. 3.
    Dunford, N. and Pettis.: Linear operations on summable functions, Trans. Amer. Math. Soc. 47 (1940) 323–392.MATHCrossRefMathSciNetGoogle Scholar
  4. 4.
    Dunford, N. and Schwartz, J. T.: Linears Operators, Interscience, New York, Part 1, 1958.Google Scholar
  5. 5.
    Gohberg, I. and Krein, I. M. G.: Fundamental theorems on deficiency numbers, root numbers and indices of linear operators, Amer. Math. Soc. Transl. Ser. 2 13 (1960), 185–264.MathSciNetGoogle Scholar
  6. 6.
    Gohberg, I., Markus, A. and Feldman, I. A.: Normally solvable operators and ideals associated with them, Amer. Math. Soc. Transl. Ser. 2 61 (1967), 63–84.Google Scholar
  7. 7.
    Goldberg, S.: Unbounded Linear Operators, McGraw-Hill, New York, 1966.MATHGoogle Scholar
  8. 8.
    Gramsch, B. and Lay, D.: Spectral mapping theorems for essential spectra, Math. Ann. 192 (1971), 17–32.CrossRefMATHMathSciNetGoogle Scholar
  9. 9.
    Grothendieck, A.: Sur les applications linéaires faiblement compactes d’espaces du type C(K), Canad. J. Math. 5 (1953), 129–173.MATHMathSciNetGoogle Scholar
  10. 10.
    Gustafson, K. and Weidmann, J.: On the essential spectrum, J. Math. Anal. Appl. 6(25) (1969), 121–127.CrossRefMATHMathSciNetGoogle Scholar
  11. 11.
    Hislop, P. D. and Segal, I. M.: Introduction to Spectral Theory with Applications to Shorodinger Operators, Springer, Berlin Heidelberg New York, 1996.Google Scholar
  12. 12.
    Jeribi, A.: Quelques remarques sur les opérateurs de Frédholm et application à l'équation de transport, C. R. Acad. Sci., Sci. Terre, 325 Série I (1997), 43–48.MATHMathSciNetGoogle Scholar
  13. 13.
    Jeribi, A.: Quelques remarques sur le spectre de Weyl et applications, C. R. Acad. Sci., Sci. Terre 327, Série I (1998) 485–490.MATHMathSciNetGoogle Scholar
  14. 14.
    Jeribi, A.: Une nouvelle caractérisation du spectre essentiel et application, C. R. Acad. Sci., Sci. Terre, 331, Série I (2000), 525–530.MATHMathSciNetGoogle Scholar
  15. 15.
    Jeribi, A.: A characterization of the essential spectrum and applications, Boll. dell. Unio. Mate. Itali., (8) 5-B, (2002), 805–825.Google Scholar
  16. 16.
    Jeribi, A.: A characterization of the Schechter essential spectrum on Banach spaces and applications, J. Math. Anal. Appl. 271 (2002), 343–358.CrossRefMATHMathSciNetGoogle Scholar
  17. 17.
    Jeribi, A.: Some remarks on the Schechter essential spectrum and applications to transport equations, J. Math. Anal. Appl. 275 (2002), 222–237.CrossRefMATHMathSciNetGoogle Scholar
  18. 18.
    Jeribi, A. and Latrach, K.: Quelques remarques sur le spectre essentiel et application à l'équation de transport, C. R. Acad. Sci., Sci. Terre 323 Série I (1996), 469–474.MATHMathSciNetGoogle Scholar
  19. 19.
    Kaashoek, M. A. and Lay, D. C.: Ascent, descent, and commuting perturbations, Trans. Amer. Math. Soc. 169 (1972), 35–47.MATHCrossRefMathSciNetGoogle Scholar
  20. 20.
    Kaper, H. G., Lekkerkerker, C.G. and Hejtmanek, J.: Spectral Methods in Linear Transport Theory, Birkhauser, Basel, 1982.MATHGoogle Scholar
  21. 21.
    Kato, T.: Perturbation theory for nullity, deficiency and other quantities of linear operators, J. Anal. Math. 6 (1958), 261–322.MATHCrossRefGoogle Scholar
  22. 22.
    Latrach, K.: Some remarks on the essential spectrum of transport operators with abstract boundary conditions. J. Math. Phys. 35 11 (1994), 6199–6212.CrossRefMATHMathSciNetGoogle Scholar
  23. 23.
    Latrach, K.: Essential spectra on spaces with the Dunford–Pettis property, J. Math. Anal. Appl. 233 (1999), 607–622.CrossRefMATHMathSciNetGoogle Scholar
  24. 24.
    Latrach, K.: Compactness properties for linear transport operator with abstract boundary conditions in slab geometry, Transp. Theory Stat. Phys. 22(1) (1993) 39–65.MATHCrossRefMathSciNetGoogle Scholar
  25. 25.
    Latrach, K. and Dehici, A.: Fredholm, semi-Fredholm perturbations, and essential spectra, J. Math. Anal. Appl. 259 (2001), 277–301.CrossRefMATHMathSciNetGoogle Scholar
  26. 26.
    Latrach, K. and Jeribi, A.: On the essential spectrum of transport operators on L 1-spaces, J. Math. Phys. 37(12) (1996), 6486–6494.CrossRefMATHMathSciNetGoogle Scholar
  27. 27.
    Latrach K. and Jeribi A.: Some results on Fredholm operators, essential spectra, and application, J. Math. Anal. Appl. 225 (1998), 461–485.CrossRefMATHMathSciNetGoogle Scholar
  28. 28.
    Latrach, K. and Paoli, J.M.: Relatively compact-like perturbations, essential spectra and application, Preprint, (2001).Google Scholar
  29. 29.
    Lindenstrauss J. and Tzafriri L.: Classical Banach Spaces I, Springer, Berlin Heidelberg New York, 1977.MATHGoogle Scholar
  30. 30.
    Lods, B.: On singular Neutron transport equations. Preprint (2000).Google Scholar
  31. 31.
    Milman V. D.: Some properties of strictly singular operators, Funct. Anal. Appl. 3 (1969), 77–78.CrossRefGoogle Scholar
  32. 32.
    Mokhtar-Kharroubi, M.: Mathematical topics in neutron transport theory. New Aspects, Adv. Math. Appl. Sci. 46, World Scientific (1997).Google Scholar
  33. 33.
    Montagnini, B. and Demuru, M. L.: Complete continuity of the free gas scattering operator in neutron thermalization theory, J. Math. Anal. Appl. 12 (1965), 49–57.CrossRefMATHMathSciNetGoogle Scholar
  34. 34.
    Nussbaum, R. D.: Spectral mapping theorems and perturbation theorem for Browder's essential spectrum, Trans. Amer. Math. Soc. 150 (1970), 445–455.MATHCrossRefMathSciNetGoogle Scholar
  35. 35.
    Pelczynski, A.: Strictly singular and cosingular operators, Bull. Acad. Pol. Sci. 13 (1965), 31–41.MathSciNetGoogle Scholar
  36. 36.
    Reed, M. and Simon, B.: Methods of Modern Mathematical Physics. IV. Analysis of Operators, Academic, New York, 1978.MATHGoogle Scholar
  37. 37.
    Schechter, M.: Invariance of essential spectrum, Bull. Amer. Math. Soc. 71 (1971), 365–367.CrossRefMathSciNetGoogle Scholar
  38. 38.
    Schechter, M.: Principles of Functional Analysis, Academic, 1971.Google Scholar
  39. 39.
    Schechter, M.: Spectra of Partial Differential Operators, North-Holland, Amsterdam, 1971.MATHGoogle Scholar
  40. 40.
    Suhadolc, A.: Linearized Boltzmann equation in L 1 space, J. Math. Anal. Appl. 35 (1971), 1–13.CrossRefMATHMathSciNetGoogle Scholar
  41. 41.
    Voigt, J.: On substochastic C 0-semigroups and their generators, Transp. Theory Stat. Phys. 16(4–6) (1987), 453–466.CrossRefMathSciNetGoogle Scholar
  42. 42.
    Weis, L.: On perturbation of Fredholm operators in L p-spaces, Proc. Amer. Math. Soc. 67 (1977), 87–92.CrossRefMathSciNetGoogle Scholar
  43. 43.
    Wolf, F.: On the essential spectrum of partial differential boundary problems, Comm. Pure Appl. Math. 12 (1959), 211–228.MATHCrossRefGoogle Scholar
  44. 44.
    Wolf, F.: On the invariance of the essential spectrum under a change of the boundary conditions of partial differential operators, Indag. Math. 21 (1959), 142–147.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Département de Mathématiques, Faculté des Sciences de SfaxUniversité de SfaxSfaxTunisia
  2. 2.Département de MathématiquesUniversité de SfaxSfaxTunisia

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