THE ABSENCE OF SINGULAR CONTINUOUS SPECTRUM FOR PERTURBED JACOBI OPERATORS

  • Zhengqi FU ,
  • Xiong LI
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  • 1. Department of Basic Sciences, Naval Submarine Academy, Qingdao 266199, China;
    2. Laboratory of Mathematics and Complex Systems (Ministry of Education), School of Mathematical Sciences, Beijing Normal University, Beijing 100875, China
Zhengqi FU, E-mail: zqfu94@163.com

Received date: 2022-09-20

  Revised date: 2023-02-07

  Online published: 2024-04-16

Supported by

Fu's work was supported by the NSFC (12371158).

Abstract

This paper is mainly about the spectral properties of a class of Jacobi operators $ (H_{c,b}u)(n)=c_{n}u(n+1)+c_{n-1}u(n-1)+b_{n}u(n), $ where $|c_{n}-1|=O(n^{-\alpha})$ and $b_{n}=O(n^{-1})$. We will show that, for $\alpha\ge1$, the singular continuous spectrum of the operator is empty.

Cite this article

Zhengqi FU , Xiong LI . THE ABSENCE OF SINGULAR CONTINUOUS SPECTRUM FOR PERTURBED JACOBI OPERATORS[J]. Acta mathematica scientia, Series B, 2024 , 44(2) : 515 -531 . DOI: 10.1007/s10473-024-0208-x

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