Geodesic
Nearly equivalent operators
Mathematica Bohemica, Tome 121 (1996) no. 2, pp. 133-141

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MR Zbl
The properties of the bounded linear operators $T $ on a Hilbert space which satisfy the condition $TT^*= U^*T^*TU $ where $U$ is unitary, are studied in relation to those of normal, hyponormal, quasinormal and subnormal operators.
The properties of the bounded linear operators $T $ on a Hilbert space which satisfy the condition $TT^*= U^*T^*TU $ where $U$ is unitary, are studied in relation to those of normal, hyponormal, quasinormal and subnormal operators.
DOI : 10.21136/MB.1996.126110
Classification : 47B20
Keywords: nearly normal operator; nearly hyponormal operator 
Othman, Sadoon Ibrahim. Nearly equivalent operators. Mathematica Bohemica, Tome 121 (1996) no. 2, pp. 133-141. doi: 10.21136/MB.1996.126110
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[1] A. Brown: On a class of operators. Proc Amer. Math. Soc 4 (1953), 723-728. | DOI | MR | Zbl

[2] J. B. Conway: Subnormal Operators. Pitman Publishing Inc., London, 1981. | MR | Zbl

[3] N. Dunford, J. Schwartz: Linear Operators, Part II. Interscience, New York, 1963. | MR | Zbl

[4] P. R. Halmos: Normal dilations and extensions of operators. Summa Brasil. Math. 2 (1950), 125-134. | MR

[5] V. I. Istrătescu: Introduction to Linear Operator Theory. Marcel Dekker, Inc., New York, 1981. | MR

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