In this paper we generalize a strategy recently proposed by the author concerning intertwining operators. In particular, we discuss the possibility of extending our previous results in such a way to construct ͑almost͒ isospectral self-adjoint opera- tors living in different Hilbert spaces. Many examples are discussed in details. Many of them arise from the theory of frames in Hilbert spaces, others from the so-called g-frames.

Bagarello, F. (2009). Intertwining operators between different Hilbert spaces: connection with frames. JOURNAL OF MATHEMATICAL PHYSICS, 50, 043509-1-043509-13 [10.1063/1.3094758].

Intertwining operators between different Hilbert spaces: connection with frames

BAGARELLO, Fabio
2009-01-01

Abstract

In this paper we generalize a strategy recently proposed by the author concerning intertwining operators. In particular, we discuss the possibility of extending our previous results in such a way to construct ͑almost͒ isospectral self-adjoint opera- tors living in different Hilbert spaces. Many examples are discussed in details. Many of them arise from the theory of frames in Hilbert spaces, others from the so-called g-frames.
2009
Bagarello, F. (2009). Intertwining operators between different Hilbert spaces: connection with frames. JOURNAL OF MATHEMATICAL PHYSICS, 50, 043509-1-043509-13 [10.1063/1.3094758].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/38557
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