From the 1 of 4 linked papers with an AI index.
4 papers
Spectral Characterizations of Schatten-class perturbations of Partial isometries
Neeru Bala, Ramesh Golla
The paper provides criteria for when a bounded operator is a compact or Schatten‑class perturbation of a scalar multiple of a partial isometry with finite‑dimensional kernel, using…
The iterated Aluthge Transforms of compact operators
Neeru Bala
Let be a bounded linear operator on a Hilbert space. Then the Aluthge transform and the sequence of Aluthge iterates of are defined by \begin{align*} ÎT=|T…
Hyponormal contractions and analytic shifts
Sneha B, Neeru Bala, Jaydeb Sarkar
Hyponormal operators are known to be among the most difficult operators to analyze. In this work, we focus on two finite types of hyponormal operators. The first type becomes analy…
Liftings and invariant subspaces of Hankel operators
Sneha B, Neeru Bala, Samir Panja +1
We prove a Hankel-variant commutant lifting theorem. This also uncovers the complete structure of the Beurling-type reducing and invariant subspaces of Hankel operators. Kernel spa…