05-22 Sergey A. Denisov
On the preservation of absolutely continuous spectrum for Schrodinger operators (318K, ps) Jan 17, 05
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Abstract. We present general principles for the preservation of a.c. spectrum under the weak perturbations. The Schrodinger operator on the strip and on the Caley tree (Bethe lattice) are considered.

Files: 05-22.src( 05-22.keywords , scattering.ps )