The Fuglede theorem and some intertwining relations

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  • Ikram Fatima Zohra Bensaid
  • Souheyb Dehimi
  • Fuglede, Bent
  • Mohammed Hichem Mortad

In this paper, we show new versions of the Fuglede theorem in an unbounded setting. A related counterexample is also presented. In the second part of the paper, we give a pair of a closed and a self-adjoint (unbounded) operator which is not intertwined by any (bounded or closed) operator except the zero operator.

OriginalsprogEngelsk
Artikelnummer9
TidsskriftAdvances in Operator Theory
Vol/bind6
Udgave nummer1
Sider (fra-til)1-8
ISSN2538-225X
DOI
StatusUdgivet - 2021

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