科研之友
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摘要
We present a necessary and sufficient condition for the norm-parallelism of bounded linear operators on a Hilbert space. We also give a characterization of the Birkhoff-James orthogonality for Hilbert space operators. Moreover, we discuss the connection between norm-parallelism to the identity operator and an equality condition for the Davis-Wielandt radius. Some other related results are also discussed.
- 出版日期2019-11-2
- 单位苏州大学
