Approximations to the numerical range of an element of a Banach algebra

Douglas S. Bridges, Robin Havea. Approximations to the numerical range of an element of a Banach algebra. In Laura Crosilla, Peter M. Schuster, editors, From sets and types to topology and analysis - Towards practicable foundations for constructive mathematics. Volume 48 of Oxford logic guides, Oxford University Press, 2005.

Authors

Douglas S. Bridges

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Robin Havea

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