The Boundary of the Numerical Range
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Publication:4064039
DOI10.2307/2040652zbMath0306.47001OpenAlexW4241514236MaRDI QIDQ4064039
Publication date: 1975
Full work available at URL: https://doi.org/10.2307/2040652
Riesz operators; eigenvalue distributions; approximation numbers, (s)-numbers, Kolmogorov numbers, entropy numbers, etc. of operators (47B06) Spectrum, resolvent (47A10)
Related Items (25)
Numerical radii of weighted shift operators using determinantal polynomials ⋮ Convexity of the orbit-closed C-numerical range and majorization ⋮ Closedness of the orbit-closed C-numerical range and submajorization ⋮ The Numerical Range of a Weighted Shift ⋮ Joint k-numerical ranges of operators ⋮ Which set is the numerical range of an operator? ⋮ The numerical range of a nilpotent operator on a Hilbert space ⋮ Essential numerical range and $C$-numerical range for unbounded operators ⋮ Closedness of the k-numerical range ⋮ On the numerical range of some weighted shift operators ⋮ Random weighted shifts ⋮ Complex symmetric operators with closed numerical ranges ⋮ Numerical Ranges of Operators and Matrices ⋮ Operators with closed numerical ranges in nest algebras ⋮ A note on the boundary of the joint numerical range ⋮ On operators with closed numerical ranges ⋮ Numerical range and numerical radius for some operators ⋮ Numerical ranges of weighted shifts ⋮ Numerical ranges encircled by analytic curves ⋮ Essential numerical ranges of operators in semi-Hilbertian spaces ⋮ Inverse continuity of the numerical range map for Hilbert space operators ⋮ Anderson’s theorem for compact operators ⋮ Joint numerical ranges and compressions of powers of operators ⋮ Approximate unitary equivalence of normaloid type operators ⋮ Normal essential eigenvalues in the boundary of the numerical range
Cites Work
- On the numerical range of a bounded operator
- Über den numerischen Wertebereich eines Operators
- Extreme points of the numerical range of a hyponormal operator
- Growth conitions and the numerical range in a Banach algebra
- On the Numerical Range of Compact Operators on Hilbert Spaces
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