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Configuration Weights in Coupled-Cluster Theory. [PDF]

open access: yesJ Phys Chem A
Kristiansen HE   +3 more
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Perturbation theory of lower semi-Browder multivalued linear operators

Publicationes Mathematicae Debrecen, 2011
In the present paper we introduce the notion of lower semi-Browder linear relation and we study the perturbation problem under compact operator perturbations.
FATMA FAKHFAKH, MAHER MNIF
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Spectral Theory for Perturbations of Unbounded Linear Operators

2016
In this chapter we first study the spectral theory of completely continuous perturbations of unbounded Fredholm operators in the non-archimedean Hilbert space \( \mathbb{E}_{\omega } \).
Toka Diagana, François Ramaroson
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