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arXiv · 2208.08387

On the $N$-hypercontractions and similarity of multivariable weighted shifts

Yingli Hou·Shanshan Ji·Jing Xu
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Abstract

In \cite{SH}, A. L. Shields proved a well-known theorem for the similarity of unilateral weighted shift operators. By using the generalization of this theorem for multivariable weighted shifts and the curvature of holomorphic bundles, we give a necessary and sufficient condition for the similarity of $m$-tuples in Cowen-Douglas class. We also present a necessary condition for commuting $m$-tuples of backward weighted shift operators to be $n$-hypercontractive in terms of the weight sequences.

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Yingli Hou, Shanshan Ji, Jing Xu. 2022-08-17. On the $N$-hypercontractions and similarity of multivariable weighted shifts. https://arxiv.org/abs/2208.08387

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