A new approach of essential pseudo spectrum in Banach space and application to transport equation

  • Bilel Elgabeur University of Sfax

Abstract

In the present paper we introduce and study the essential pseudo spectrum of bounded linear operator on Banach space. Beside that, we discuss some results of stability under Riesz operator and some properties of these pseudo spectrum. This paper also deals with the relationship between the essential pseudo spectrum and the pseudo Browder essential spectrum of bounded linear operator in Banach space. Finally, as an application, we apply these results to a transport equation.

Downloads

Download data is not yet available.

References

F. Abdmouleh and A. Jeribi, Gustafson, Weidman, Kato, Wolf, Schechter, Browder, Rakocevic and Schmoeger essential spectra of the sum of two bounded operators and application to transport operators. Math. Nachr: 284(2-3), 166-176, (2011).

F. Abdmouleh, A. Ammar and A. Jeribi, Pseudo-Browder essential spectra of linear operators and application to a transport equations, J. Comput. Theor. Transp. 44 (2015), 141-135.

F. Abdmouleh, B. Elgabeur, Pseudo Essential Spectra in Banach Space and Application to Operator Matrices, Acta Applicandae Mathematicae, vol. 181, (1), p. 7., https://doi. 10.1007/s10440-022-00527-5, (2022).

F. Abdmouleh , B. Elgabeur, On the pseudo semi-Browder essential spectra and application to 2 x 2 block operator matrices, Filomat, 37, no. 19, 6373-6386, https://doi.10.2298/FIL2433675E, (2024).

E. B. Davies, Spectral Theory and Differential Operators, Cambridge University Press, Cambridge, (1995).

Dautray, Robert, Lions, Jacques-Louis, Mathematical Analysis and Numerical Methods for Science and Technology, Tome9, Massons, Paris, (1988).

B. Elgabeur, A Characterization of Essential Pseudospectra Involving Polynomially Compact Operators, Filomat, vol 38, no. 33, 11675-11691, https://doi.10.2298/FIL2319373A, (2023).

D. Hinrichsen and A. J. Pritchard, Robust stability of linear evolution operators on Banach spaces, SIAM J. Control Optim. 32, 1503-1541, (1994).

R. Harte, Invertibility and singularity for bounded linear operators, Marcel Dekker, New York, 1988.

A. Jeribi and M. Mnif, Fredholm operators, essential spectra and application to transport equation. Acta Appl. Math. 89, 155-176, (2006).

T. Kato, Perturbation theory for nullity, deficiency and other quantities of linear operators, J. Analyse Math., 6, 261-322, (1958).

H. J. Landau, On Szegı’s eigenvalue distribution theorem and non-Hermitian kernels, J. Analyse Math. 28, 335-357, (1975).

M. Mokhtar-Kharroubi, Time asymptotic behaviour and compactness in transport theory, European J. Mech. B Fluids 11 (1), 39-68, (1992).

V. Rakocevic, Semi-Browder operators and perturbations. Stud. Math. 112 (2), 131-137, (1997).

M. Schechter, Principles of Functional Analysis, second edition, American Mathematical Society, Providence, RI, (2002).

M. Schechter, Spectra of Partial Differential Operators, second edition, North-Holland Publishing Co., Amsterdam, (1986).

L. N. Trefthen, Pseudospectra of matrices, in ”Numerical Analysis 1991 (Dundee, 1991 ), Longman Sci. Tech., Harlow, 234-266, (1992).

J. M. Varah, The Computation of Bounds for the Invariant Subspaces of a General Matrix Operator”, Thesis (Ph.D.), Stanford University, (1967).

I. Vidav, Existence and uniqueness of nonnegative eigenfunctions of the Boltzmann operator, J. Math. Anal. Appl. 22, 144-155, (1968).

Published
2025-08-25
Section
Research Articles