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Numerical index with respect to an operator

Tom 225 / 2014

Mohammad Ali Ardalani Studia Mathematica 225 (2014), 165-171 MSC: Primary 47A12; Secondary 46E15, 46B20, 46B10. DOI: 10.4064/sm225-2-3

Streszczenie

We introduce new concepts of numerical range and numerical radius of one operator with respect to another one, which generalize in a natural way the known concepts of numerical range and numerical radius. We study basic properties of these new concepts and present some examples.

Autorzy

  • Mohammad Ali ArdalaniDepartment of Mathematics
    Faculty of Science
    University of Kurdistan
    Pasdaran Ave.
    Postal Code 66177-15175
    Sanandaj, Iran
    e-mail

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