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math.FA2009
The unbounded commutant of an operator of class C_0
Hari Bercovici
We describe the closed, densely defined linear transformations commuting with a given operator T of class C_0 in terms of bounded operators in {T}'. Our results extend those of Sar…
math.FA2009★ 5 cited
Confluent operator algebras and the closability property
H. Bercovici, R. G. Douglas, C. Foias +1
Certain operator algebras A on a Hilbert space have the property that every densely defined linear transformation commuting with A is closable. Such algebras are said to have the c…