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math.FA2026
Characteristic Functions and Colligations
Neeru Bala, Santanu Dey, Kalpesh J. Haria +1
The characteristic function of row contractions and the characteristic function of liftings of row contractions are multi-analytic operators which are complete invariants up to uni…
math.FA2024
Hyperinvariant subspaces for normaloid essential isometric operators
Neeru Bala, Ramesh Golla
In this article, we prove the existence of a non-trivial hyperinvariant subspace for a subclass of compact perturbations of scalar multiple of a partial isometry. Later, we illustr…
math.FA2024
A Bishop-Phelps-Bollobás theorem for bounded analytic functions
Neeru Bala, Kousik Dhara, Jaydeb Sarkar +1
Let denote the Banach algebra of all bounded analytic functions on the open unit disc and denote by the Banach space of all bounded linear operat…