scientific article; zbMATH DE number 3357483
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Publication:5631640
zbMath0225.47008MaRDI QIDQ5631640
Publication date: 1971
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Spectrum, resolvent (47A10) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)
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