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A remark on Krein’s resolvent formula and boundary conditions. (English) Zbl 1071.47003


MSC:

47A10 Spectrum, resolvent
47B25 Linear symmetric and selfadjoint operators (unbounded)
47A20 Dilations, extensions, compressions of linear operators
47A06 Linear relations (multivalued linear operators)
47N50 Applications of operator theory in the physical sciences
81Q10 Selfadjoint operator theory in quantum theory, including spectral analysis
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