On spectrum of Jacobi operator with exponentially increasing matrix elements

Details On spectrum of Jacobi operator with exponentially increasing matrix elements On spectrum of Jacobi operator with exponentially increasing matrix elements

2009-12-04

arxiv.org/abs/0912.0813v1

Mathematics

Functional Analysis

8 pages

Scientific paper

The class of three-diagonal Jacobi matrix with exponentially increasing elements is considered. Under some assumptions the matrix corresponds to unbounded self-adjoint operator in the weighted space. The weight depends on elements of the matrix and in some cases can arise indefinite metric. We proved that eigenvalue problem for this operator is equivalent to the eigenvalue problem of Sturm--Liouville operator with discrete self-similar weight. The asymptotic formulas for eigenvalues are obtained. These formulas differ for cases of definite and indefinite metrics.

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