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Geometry of holomorphic vector bundles and similarity of commuting operator tuples

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arxiv 1801.01680 v6 pith:IBMSV5QG submitted 2018-01-05 math.FA

Geometry of holomorphic vector bundles and similarity of commuting operator tuples

classification math.FA
keywords similaritytuplescommutingclasscowen-douglashilbertanswerapplication
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In this paper, a new criterion for the similarity of commuting tuples of operators on Hilbert spaces is introduced. As an application, we obtain a geometric similarity invariant of tuples in the Cowen-Douglas class which gives a partial answer to a question raised by R.G. Douglas about the similarity of quasi-free Hilbert modules. Moreover, a new subclass of commuting tuples of Cowen-Douglas class is obtained.

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