Best approximation of unbounded operators by bounded operators
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1995), pp. 42-68
@article{IVM_1995_11_a3,
author = {V. V. Arestov and V. N. Gabushin},
title = {Best approximation of unbounded operators by bounded operators},
journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
pages = {42--68},
year = {1995},
number = {11},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/IVM_1995_11_a3/}
}
V. V. Arestov; V. N. Gabushin. Best approximation of unbounded operators by bounded operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1995), pp. 42-68. http://geodesic.mathdoc.fr/item/IVM_1995_11_a3/