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On operator colligations with nonunitary characteristic operator-valued functions. (English. Russian original) Zbl 0295.46058

Sov. Math., Dokl. 14, 1149-1152 (1973); translation from Dokl. Akad. Nauk SSSR 211, 1035-1037 (1973).

MSC:

46E40 Spaces of vector- and operator-valued functions
47A10 Spectrum, resolvent
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