Abstract
Our goal is to define new classes of bounded linear operators between two Hilbert spaces, solving corresponding systems of equations. Precisely, we introduce the Wg-Drazin-star operator and its dual, extending the notions of the W-weighted Drazin-star matrix and its dual for a rectangular matrix. We prove many characterizations and operator matrix representations of the Wg-Drazin-star operator and its dual. As special cases of the Wg-Drazin-star operator and its dual, the g-Drazin-star operator and its dual are presented and studied. Applying our new classes of operators, we also solve adequate equations. Thus, we generalize some well-known results and present new results.
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(Communicated by Gregor Dolinar )
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© 2023 Mathematical Institute Slovak Academy of Sciences
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Articles in the same Issue
- RNDr. Stanislav Jakubec, DrSc. passed away
- Schur m-power convexity for general geometric Bonferroni mean of multiple parameters and comparison inequalities between several means
- Conditions forcing the existence of relative complements in lattices and posets
- Radically principal MV-algebras
- A topological duality for dcpos
- Padovan or Perrin numbers that are concatenations of two distinct base b repdigits
- Addendum to “A generalization of a result on the sum of element orders of a finite group”
- Remarks on w-distances and metric-preserving functions
- Solution of logarithmic coefficients conjectures for some classes of convex functions
- Multiple periodic solutions of nonautonomous second-order differential systems with (q, p)-Laplacian and partially periodic potentials
- Asymptotic stability of nonlinear neutral delay integro-differential equations
- On Catalan ideal convergent sequence spaces via fuzzy norm
- Fourier transform inversion: Bounded variation, polynomial growth, Henstock–Stieltjes integration
- (ε, A)-approximate numerical radius orthogonality and numerical radius derivative
- Wg-Drazin-star operator and its dual
- On the Lupaş q-transform of unbounded functions
- K-contact and (k, μ)-contact metric as a generalized η-Ricci soliton
- Compactness with ideals
- Number of cells containing a given number of particles in a generalized allocation scheme
- A new generalization of Nadarajah-Haghighi distribution with application to cancer and COVID-19 deaths data
- Compressive sensing using extropy measures of ranked set sampling
- A note on star partial order preservers on the set of all variance-covariance matrices