C*-Algebra numerical range of quadratic elements

نویسنده

  • M. T. Heydari
چکیده مقاله:

It is shown that the result of Tso-Wu on the elliptical shape of the numerical range of quadratic operators holds also for the C*-algebra numerical range.

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عنوان ژورنال

دوره 5  شماره None

صفحات  49- 53

تاریخ انتشار 2010-05

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