The Numerical Range of an Unbounded Operator

DOI10.2307/2041849zbMath0323.47005OpenAlexW4235137381MaRDI QIDQ4086261

M. J. Crabb

Publication date: 1976

Full work available at URL: https://doi.org/10.2307/2041849

Mathematics Subject Classification ID

Spectrum, resolvent (47A10)

Related Items (3)

A semigroup approach to the numerical range of operators on Banach spaces ⋮ Characterizations of Hilbert space and the Vidav-Palmer theorem ⋮ Constants relating a Hermitian operator and its square

Cites Work

• The numerical ranges of unbounded operators
• On the Boundary of the Spatial Numerical Range

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