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arXiv · 2003.04090

The Cauchy dual subnormality problem for cyclic $2$-isometries

Akash Anand·Sameer Chavan·Zenon Jan Jabłoński·Jan Stochel
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Abstract

The Cauchy dual subnormality problem asks whether the Cauchy dual operator of a $2$-isometry is subnormal. Recently this problem has been solved in the negative. Here we show that it has a negative solution even in the class of cyclic $2$-isometries.

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Akash Anand, Sameer Chavan, Zenon Jan Jabłoński, Jan Stochel. 2020-03-09. The Cauchy dual subnormality problem for cyclic $2$-isometries. https://arxiv.org/abs/2003.04090

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