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On positive commutators |
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| Authors: | Janko Bra?i? Roman Drnov?ek Yuliya B Farforovskaya Evgueniy L Rabkin Jaroslav Zemánek |
| Institution: | 1.Department of Mathematics, Institute of Mathematics, Physics and Mechanics,University of Ljubljana,Ljubljana,Slovenia;2.Department of Mathematics, Faculty of Mathematics and Physics,University of Ljubljana,Ljubljana,Slovenia;3.“M. A. Bonch-Bruevich” State University of Telecommunications,St. Petersburg,Russia;4.Institute of Mathematics,Polish Academy of Sciences,Warsaw,Poland |
| Abstract: | Let A and B be positive operators on a Banach lattice such that the commutator C = AB − BA is also positive. We study the size of the spectrum of C. |
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