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JOURNALS
// Matematicheskii Sbornik
// Archive
Mat. Sb. (N.S.),
1953
Volume 33(75),
Number 1,
Pages
193–198
(Mi sm5341)
On the index of an unbounded operator
I. Ts. Gokhberg
Received:
01.10.1952
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Steklov Math. Inst. of RAS
, 2024