B. Duggal

activity

20082024

most citedStructure of elementary operators defining

m

-left invertible,

m

-selfadjoint and related classes of operators

17 citations · 44 across the 22 of their papers we have counts for

collaborators

Showing 2019Show all

4 papers · 1 filter

math.FA2019★ 1 cited

On power Drazin normal and Drazin quasi-normal Hilbert space operators

B. P. Duggal, I. H. Kim

A Drazin invertible Hilbert space operator $T\in \B$, with Drazin inverse $T_{d}$ , is $(n, m)$ -power D-normal, $T \in [(n, m) D N]$ , if $[T_{d}^{n}, T^{* m}] = T_{d}^{n} T^{* m} - T^{* m} T_{d}^{n} = 0$ ; $T$ is…

math.FA2019

On $n$ th roots of normal operators

B. P. Duggal, I. H. Kim

For $n$ -normal operators $A$ [2, 4, 5], equivalently $n$ -th roots $A$ of normal Hilbert space operators, both $A$ and $A^{*}$ satisfy the Bishop--Eschmeier--Putinar property $(β)_{ε}$ ,…

math.SP2019

Generalized Drazin-meromorphic invertible operators and generalized Kato-meromorphic decomposition

Snežana Č. Živković-Zlatanović, Bhagwati P. Duggal

A bounded linear operator $T$ on a Banach space $X$ is said to be generalized Drazin-meromorphic invertible if there exists a bounded linear operator $S$ acting on $X$ such that $T…

math.FA2019★ 1 cited

Power bounded $m$ -left invertible operators

B. P. Duggal, C. S. Kubrusly

A Hilbert space operator $S\in\B$ is left $m$ -invertible by $T\in\B$ if $j = 0 \sum m (- 1)^{m - j} (m j) T^{j} S^{j} = 0,$ $S$ is $m$ -isometric if…

On power Drazin normal and Drazin quasi-normal Hilbert space operators

On nth roots of normal operators

Generalized Drazin-meromorphic invertible operators and generalized Kato-meromorphic decomposition

Power bounded m-left invertible operators

On $n$ th roots of normal operators

Power bounded $m$ -left invertible operators