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21 Ekim 2019, 14:00 
Bilkent Üniversitesi Analiz SeminerleriDistance of the set of commutators to the identity Aurelian Gheondea
According to a classical theorem of Wintner and Wielandt, the equation [A,B]=I does not have any solution A and B in the algebra of linear bounded operators B(H) on a Hilbert space H, where [A,B]=AB-BA denotes the commutator of A and B, and I denotes the identity operator on H. We present a survey of known results for the estimation of the distance from the set of commutators to the identity and some open questions. Senior and graduate students are welcome.
NOT: Konuşma sonrasında çay-kurabiye ikramı yapılacaktır. Analiz İngilizce SA - Z18 sena 20.03.2020 |
