On operator nodes and their characteristic functions. (English. Russian original) Zbl 0231.47011
Sov. Math., Dokl. 12, 696-700 (1971); translation from Dokl. Akad. Nauk SSSR 198, 16-19 (1971).
MSC:
47A48 | Operator colligations (= nodes), vessels, linear systems, characteristic functions, realizations, etc. |
46C99 | Inner product spaces and their generalizations, Hilbert spaces |
47A05 | General (adjoints, conjugates, products, inverses, domains, ranges, etc.) |