A note on the discrete Schrödinger operator with a perturbed periodic potential
The aim of this paper is to study the spectrum of the one-dimensional discrete Schrödinger operator with a perturbed periodic potential. We obtain natural conditions under which this perturbation preserves the essential spectrum of the considered operator. Conditions on the number of isolated eigenv...
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| Format: | Article |
| Language: | English |
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AGH Univeristy of Science and Technology Press
2010-01-01
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| Series: | Opuscula Mathematica |
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| Online Access: | http://www.opuscula.agh.edu.pl/vol30/2/art/opuscula_math_3013.pdf |