6 papers · 1 filter
A Gleason-Kahane-Żelazko Theorem for spaces
Jaikishan, Sneh Lata, Dinesh Singh
We study two entities that have proved to be of interest and importance in their own right viz. the spaces and the classical Gleason-Kahane-Żelazko (GKZ) theorem. We e…
Nearly invariant subspaces in the real Hardy space
Arshad Khan, Sneh Lata, Dinesh Singh
The objective of this article is to study nearly invariant subspaces of the backward shift operator on the real Hardy space. We also investigate nearly invariant subspaces with fin…
Doubly twisted near-isometries: Classification and a Wold-type decomposition
Sneh Lata, Santosh Singh Negi, Dinesh Singh
We introduce and study doubly twisted near-isometries. A doubly twisted near-isometry is a tuple of near-isometries satisfying certain relations determined by a prescribed family o…
Perturbations of Toeplitz operators on vector-valued Hardy spaces
Arshad Khan, Sneh Lata, Dinesh Singh
In this article, we completely classify invariant subspaces of finite-rank perturbations of a class of Toeplitz operators on vector-valued Hardy spaces. As a consequence, in the ve…
A several variables Kowalski-S\lodkowski theorem for topological spaces
Jaikishan, Sneh Lata, Dinesh Singh
In this paper, we provide a version of the classical result of Kowalski and Słodkowski that generalizes the famous Gleason-Kahane-elazko (GKZ) theorem by characterizin…
Nearly invariant brangesian subspaces
Arshad Khan, Sneh Lata, Dinesh Singh
This article describes Hilbert spaces contractively contained in certain reproducing kernel Hilbert spaces of analytic functions on the open unit disc which are nearly invariant un…