Approximate isosceles \(\omega\)-orthogonality and approximate \(\omega\)-parallelism
DOI10.1007/s40590-023-00528-wOpenAlexW4385144907MaRDI QIDQ6133612
Maryam Amyari, Mahdi Torabian, M. Moradian Khibary
Publication date: 18 August 2023
Published in: Boletín de la Sociedad Matemática Mexicana. Third Series (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s40590-023-00528-w
Hilbert spacenumerical radiusapproximate \(\omega\)-parallelismapproximate isosceles \(\omega\)-orthogonality
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)
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