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Publication:3676697
zbMath0563.47027MaRDI QIDQ3676697
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Publication date: 1983
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biorthogonalityindefinite metricselfadjoint operatoradjointorthogonal complementprojection operatorprojectability
Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) General (adjoints, conjugates, products, inverses, domains, ranges, etc.) (47A05) Quadratic and bilinear forms, inner products (15A63) Linear operators on spaces with an indefinite metric (47B50)
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