Messirdi, Bekkai; Benaicha, Slimane; Djaa, Mustapha; Rahmani, Abdelkader
(Publié dans International Journal of Mathematical Analysis, Volume1, 2007)
We present a general reduction Feshbach method that can be applied in particular to the spectral study of operators including the hamiltonian of the Born-Oppenheimer approximation and also to Fredholm operators.
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