Expanding the joint spectrum of pairs of commuting contractions

DOI10.1090/S0002-9939-96-03446-6zbMath0863.47003OpenAlexW1559593333MaRDI QIDQ3837609

Adrian Mihai Ionescu

Publication date: 10 December 1996

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

Full work available at URL: https://doi.org/10.1090/s0002-9939-96-03446-6

zbMATH Keywords

common nontrivial invariant subspaces for a pair of commuting contractions with large joint spectrainvariant subspaces for a single contraction with spectral radius

Mathematics Subject Classification ID

Several-variable operator theory (spectral, Fredholm, etc.) (47A13) Invariant subspaces of linear operators (47A15) Conformal mappings of special domains (30C20) Cluster sets, prime ends, boundary behavior (30D40)

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