The main result of this paper is that, under conditions met by the potential ν, which are The operators W_± are unitary and realize the similarity between p and H, i.e. H W_± = W_± p. It has been proven that if v1 and ν2 are two potentials to which the operators H1 and H2 correspond, then there are the wav operators associated with W1 ±, W2, ± by the relations.
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