The unbounded commutant of an operator of class C_0
Functional Analysis
2009-08-18 v1
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.
Keywords
Cite
@article{arxiv.0908.2262,
title = {The unbounded commutant of an operator of class C_0},
author = {Hari Bercovici},
journal= {arXiv preprint arXiv:0908.2262},
year = {2009}
}