On the point spectrum of ℋ–2-singular perturbations

2007 ◽  
Vol 280 (1-2) ◽  
pp. 20-27 ◽  
Author(s):  
Sergio Albeverio ◽  
Mykola Dudkin ◽  
Alexei Konstantinov ◽  
Volodymyr Koshmanenko
Keyword(s):  
Singular Perturbations ◽  
Point Spectrum

Singular perturbations of finite rank. Point spectrum

1997 ◽  
Vol 49 (9) ◽  
pp. 1335-1344 ◽  
Author(s):  
V. D. Koshmanenko ◽  
O. V. Samoilenko
Keyword(s):  
Singular Perturbations ◽  
Finite Rank ◽  
Point Spectrum

scholarly journals Singular Perturbations of Self-Adjoint Operators

2003 ◽  
Vol 6 (4) ◽  
pp. 349-384 ◽  
Author(s):  
Vladimir Derkach ◽  
Seppo Hassi ◽  
Henk de Snoo
Keyword(s):  
Singular Perturbations ◽  
Adjoint Operators
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