Opuscula Mathematica
Opuscula Math. 33, no. 2 (), 307-321
Opuscula Mathematica

Variational characterizations for eigenfunctions of analytic self-adjoint operator functions

Abstract. In this paper we consider Rellich's diagonalization theorem for analytic self-adjoint operator functions and investigate variational principles for their eigenfunctions and interlacing statements. As an application, we present a characterization for the eigenvalues of hyperbolic operator polynomials.
Keywords: operator functions, eigenfunctions, eigenvalues, variational principles.
Mathematics Subject Classification: 15A22, 15A18, 47A56, 47A75, 49R50.
Cite this article as:
Georgios Katsouleas, John Maroulas, Variational characterizations for eigenfunctions of analytic self-adjoint operator functions, Opuscula Math. 33, no. 2 (2013), 307-321, http://dx.doi.org/10.7494/OpMath.2013.33.2.307
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ISSN 1232−9274, e-ISSN 2300−6919, DOI https://doi.org/10.7494/OpMath
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