An asymmetric Putnam–Fuglede theorem for unbounded operators

Stochel, Jan

doi:10.1090/S0002-9939-01-06127-5

An asymmetric Putnam–Fuglede theorem for unbounded operators
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by Jan Stochel PDF

Proc. Amer. Math. Soc. 129 (2001), 2261-2271 Request permission

Abstract:

The intertwining relations between cosubnormal and closed hyponormal (resp. cohyponormal and closed subnormal) operators are studied. In particular, an asymmetric Putnam–Fuglede theorem for unbounded operators is proved.

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