Approximation by polynomials with nonnegative coefficients and the spectral theory of positive operators

DOI10.1090/S0002-9947-98-01998-9zbMath0898.30030OpenAlexW1504297259MaRDI QIDQ4382362

Bertram Walsh, Roger D. Nussbaum

Publication date: 30 March 1998

Published in: Transactions of the American Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1090/s0002-9947-98-01998-9

zbMATH Keywords

spectral radiuspositive linear operatorspolynomial approximation with nonnegative coefficients

Mathematics Subject Classification ID

Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Approximation in the complex plane (30E10) Positive linear operators and order-bounded operators (47B65)

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