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JOURNALS // Matematicheskii Sbornik // Archive
Mat. Sb. (N.S.), 1952 Volume 30(72), Number 1, Pages 219–224 (Mi sm5425)
This article is cited in 2 papers

Stability of the index of an unbounded operator

M. G. Krein, M. A. Krasnosel'skii


Received: 29.10.1951



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