Study of the essential spectrum of a matrix operator |
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Authors: | T Kh Rasulov |
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Institution: | 1.Bukhara State University,Bukhara,Uzbekistan |
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Abstract: | We consider a matrix operator H corresponding to a system with a nonconserved finite number of particles on a lattice. We describe the structure of the essential spectrum of the operator H and prove that the essential spectrum is a union of at most four intervals. |
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Keywords: | |
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