A-approximate point spectrum of A-bounded operators in semi-Hilbertian spaces
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Date
2025
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Journal ISSN
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Publisher
Indian National Science Academy
Abstract
The paper delves into several characterizations of A-approximate point spectrum of A-bounded operators acting on a complex semi-Hilbertian space H and also investigates properties of the A-approximate point spectrum for the tensor product of two A12-adjoint operators. Furthermore, several properties of A-normal operators have been established. © The Indian National Science Academy 2025.
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Keywords
A-approximate point spectrum, A-normal operator, Semi-Hilbertian space
Citation
Indian Journal of Pure and Applied Mathematics, 2025, 56, 3, pp. 1163-1176