Approximate ω-orthogonality and ω-derivation

DOI10.7153/mia-2021-24-32OpenAlexW3159646361MaRDI QIDQ4991587

Maryam Amyari, Marzieh Moradian Khibary

Publication date: 3 June 2021

Published in: Mathematical Inequalities & Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.7153/mia-2021-24-32

zbMATH Keywords

Hilbert spacenumerical radius\( \omega \)-derivationapproximate \(\omega \)-orthogonality

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Geometry and structure of normed linear spaces (46B20) Numerical range, numerical radius (47A12)

Related Items (2)

Approximate isosceles \(\omega\)-orthogonality and approximate \(\omega\)-parallelism ⋮ \((\varepsilon,A)\)-approximate numerical radius orthogonality and numerical radius derivative

Cites Work

• Maps preserving numerical radius or cross norms of products of self-adjoint operators
• Numerical radius inequalities for certain \(2 \times 2\) operator matrices
• On numerical radius of a matrix and estimation of bounds for zeros of a polynomial
• On symmetry of strong Birkhoff orthogonality in \(B(\mathcal{H},\mathcal{K})\) and \(K(\mathcal{H},\mathcal{K})\)
• A new approach to numerical radius of quadratic operators
• Approximate Birkhoff-James orthogonality in the space of bounded linear operators
• Approximate orthogonality in normed spaces and its applications
• Semi-Inner-Product Spaces
• Characterizations of Operator Birkhoff–James Orthogonality
• Inequalities for the Numerical Radius of Linear Operators in Hilbert Spaces
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