ON THE POINT SPECTRUM OF THE FINITE RANK FREDHOLM INTEGRAL OPERATOR

Authors

  • Jasmina T. Husenova Bukhara State University, Bukhara Uzbekistan j.t.husenovna@buxdu.uz ORCID 0009-0003-3365-7922 Author

Keywords:

integral operator, kernel, Fredholm operator, parameter function, rank of operator.

Abstract

In the present note it is considered the Fredholm integral operator  with, rank  in the Hilbert space . Firstly, it is mentioned that the number 0 is an eigenvalue of the Fredholm integral operator  with infinite multiplicity. The Fredholm determinant corresponding to this operator is constructed and its point spectrum is described.

References

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[2] T.Kh.Rasulov, Z.D.Rasulova. On the spectrum of a three-particle model operator on a lattice with non-local potentials. Siberian Electronic Mathematical Reports, 12 (2015), pp. 168-184.

[3] B.I.Bahronov, T.H.Rasulov, M.Rehman. Conditions for the existence of eigenvalues of a three-particle lattice model Hamiltonian. Russian Mathematics, 67:7 (2023), pp. 3-12.

[4] B.I.Bahronov, T.H.Rasulov. On the Numerical Range of a Friedrichs Model with Rank Two Perturbation: Threshold Analysis Technique. AIP Conf. Proc., 2764 (2023), 030007-1–030007-10.

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Published

2025-01-05