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Inequalities for the Norm and Numerical Radius of Composite Operators in Hilbert Spaces

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Inequalities and Applications

Part of the book series: International Series of Numerical Mathematics ((ISNM,volume 157))

Abstract

Some new inequalities for the norm and the numerical radius of composite operators generated by a pair of operators are given.

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References

  1. S.S. Dragomir, Reverse inequalities for the numerical radius of linear operators in Hilbert spaces, Bull. Austral. Math. Soc. 73 (2006), 255–262.

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Author information

Authors and Affiliations

  1. School of Computer Science and Mathematics, Victoria University, PO Box 14428, Melbourne City, Victoria, 8001, Australia

    Silvestru S. Dragomir

Authors
  1. Silvestru S. Dragomir
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Editor information

Editors and Affiliations

  1. Institut Mathematik, Universität Basel, Rheinsprung 21, 4051, Basel, Switzerland

    Catherine Bandle

  2. Department Economic Analysis & Information Technology for Business, University of Debrecen, Kassai Ăşt.26, 4028, Debrecen, Hungary

    László Losonczi

  3. Department of Analysis Institute Mathematics & Informatics, University of Debrecen, Pf. 12, 4010, Debrecen, Hungary

    Attila Gilányi  & Zsolt Páles  & 

  4. Institut für Analysis, Universität Karlsruhe, Kaiserstrasse 12, 76128, Karlsruhe, Germany

    Michael Plum

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© 2008 Birkhäuser Verlag Basel/Switzerland

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Dragomir, S.S. (2008). Inequalities for the Norm and Numerical Radius of Composite Operators in Hilbert Spaces. In: Bandle, C., Losonczi, L., Gilányi, A., Páles, Z., Plum, M. (eds) Inequalities and Applications. International Series of Numerical Mathematics, vol 157. Birkhäuser, Basel. https://doi.org/10.1007/978-3-7643-8773-0_13

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