Numerical range of two operators in semi-inner product spaces

DOI10.1155/2012/846396zbMath1258.47010OpenAlexW2153399013WikidataQ58696929 ScholiaQ58696929MaRDI QIDQ417203

Nabin Kumar Sahu, Sudarsan Nanda, Chandal Nahak

Publication date: 14 May 2012

Published in: Abstract and Applied Analysis (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1155/2012/846396

zbMATH Keywords

numerical rangespectrumsemi-inner product space

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

Related Items (1)

Numerical radius inequalities for nonlinear operators in Hilbert spaces

Cites Work

• The numerical range of a tridiagonal operator
• On geometric properties of the numerical range
• Spectra of products and numerical ranges
• The closure of the numerical range contains the spectrum
• A numerical range for two linear operators
• Semi-Inner-Product Spaces
• The numerical radius of a weighted shift operator with geometric weights
• Classes of Semi-Inner-Product Spaces
• The numerical range of nonlinear Banach space operators
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