Conditions for the $k$-fold completeness ($0$) of root functions of an $n$th-order ordinary differential operator pencil
Differencialʹnye uravneniâ, Tome 42 (2006) no. 6, pp. 723-730
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@article{DE_2006_42_6_a0,
author = {A. I. Vagabov and Z. A. Abdurakhmanov},
title = {Conditions for the $k$-fold completeness ($0<k\le n$) of root functions of an $n$th-order ordinary differential operator pencil},
journal = {Differencialʹnye uravneni\^a},
pages = {723--730},
year = {2006},
volume = {42},
number = {6},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_2006_42_6_a0/}
}
A. I. Vagabov; Z. A. Abdurakhmanov. Conditions for the $k$-fold completeness ($0