Abstract
Various classes of extensions of symmetric operators with equal (finite or infinite) defect numbers are described in terms of abstract boundary conditions. The dual problem of the description of extensions of a symmetric binary relation is also considered.
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Additional information
Translated from Matematicheskii Zametki, Vol. 17, No. 1, pp. 41–48, January, 1975.
The author thanks M. L. Gorbachuk for useful observations.
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Kochubei, A.N. Extensions of symmetric operators and symmetric binary relations. Mathematical Notes of the Academy of Sciences of the USSR 17, 25–28 (1975). https://doi.org/10.1007/BF01093837
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DOI: https://doi.org/10.1007/BF01093837