K. M. Fishman, I. V. Gel'man, “On a criterion for the finiteness of the defect-index of an Hermitian operator”, Uspekhi Mat. Nauk, 1956, Volume 11, Issue 3(69),Pages <nobr>185

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Uspekhi Mat. Nauk, 1956 Volume 11, Issue 3(69), Pages 185–187 (Mi rm7808)

Scientific notes and problems

On a criterion for the finiteness of the defect-index of an Hermitian operator

K. M. Fishman, I. V. Gel'man

Received: 21.06.1955

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