2019
Том 71
№ 6

All Issues

Samoilenko O. V.

Articles: 1
Article (Ukrainian)

Singular perturbations of finite rank. Point spectrum

Koshmanenko V. D., Samoilenko O. V.

↓ Abstract   |   Full text (.pdf)

Ukr. Mat. Zh. - 1997. - 49, № 9. - pp. 1186–1194

We establish necessary and sufficient conditions for the appearance of an additional point spectrum under singular perturbations of finite rank.