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arXiv · 0908.2262

The unbounded commutant of an operator of class C_0

Hari Bercovici
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Abstract

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 Sarason for operators with defect index 1, and Martin in the case of arbitrary finite index.

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Hari Bercovici. 2009-08-16. The unbounded commutant of an operator of class C_0. https://arxiv.org/abs/0908.2262

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