Showing 2020Show all
2 papers · 1 filter
math.FA2020
The Cauchy dual subnormality problem for cyclic -isometries
Akash Anand, Sameer Chavan, Zenon Jan Jabłoński +1
The Cauchy dual subnormality problem asks whether the Cauchy dual operator of a -isometry is subnormal. Recently this problem has been solved in the negative. Here we show that…
math.FA2020
Dirichlet-type spaces on the unit ball and joint 2-isometries
Sameer Chavan, Rajeev Gupta, Md. Ramiz Reza
We obtain a formula that relates the spherical moments of the multiplication tuple on a Dirichlet-type space to a complex moment problem in several variables. This can be seen as t…