On h-unitary and block-toeplitz h-normal operators |
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| Authors: | Israel Gohberg Boris Reichstein |
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| Institution: |
a Raymond and Beverly Sackler Faculty of Exact Sciences, School of Mathematical Sciences, Tel-Aviv University, Israel
b Department of Mathematics, The Catholic University of America, Washington, DC |
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| Abstract: | A special class of normal operators acting in spaces with indefinite scalar products is studied. The operators from this class are characterized by the property that, in a natural basis, their matrices have diagonal block-Toeplitz forms. The relations between polynomials of self-adjoint operators and operators from this class are established. |
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