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On a system of operator equations. (English) Zbl 0211.17701

47A62 Equations involving linear operators, with operator unknowns
46B45 Banach sequence spaces
46C15 Characterizations of Hilbert spaces
47A50 Equations and inequalities involving linear operators, with vector unknowns
Full Text: DOI
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[2] Abraham, R.; Marsden, J.: Foundations of mechanics. (1967)
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