Stability of deficiency indices
- 1 January 1977
- journal article
- research article
- Published by Cambridge University Press (CUP) in Proceedings of the Royal Society of Edinburgh: Section A Mathematics
- Vol. 78 (1-2) , 119-127
- https://doi.org/10.1017/s0308210500009884
Abstract
Many known results about the stability of selfadjointness are extended to results about the stability of the deficiency index of closed symmetric operators on Hilbert space under perturbation.Keywords
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