Spectral analysis of second order quantum difference operator over the sequence space lp (1 < p < ∞)

In this article, we study the spectrum, fine spectrum and boundedness property of second order quantum difference operator ∆2q (0 < q < 1) over the class of sequence lp (1 < p < ∞), the pth summable sequence space. The second order quantum difference operator ∆2q is a lower triangular triple band matrix ∆2q(1,−(1+ q),q). We also determine the approximate point spectrum, defect spectrum, compression spectrum, and Goldberg classification of the operator on the class of sequence. We obtained the results by solving an infinite system of linear equations and computing the inverse of a lower triangular infinite matrix. We also provide appropriate examples along with graphical representations where necessary.

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Publication Details

Journal
BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS
Published
2025-06-30
DOI
https://doi.org/10.31489/2025m2/122-136
Primary Topic
Approximation Theory and Sequence Spaces
Type
article
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article

Spectral analysis of second order quantum difference operator over the sequence space lp (1 < p < ∞)

Neelam Kalita, Amar Jyoti Dutta
BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS
Approximation Theory and Sequence Spaces
article

Spectral analysis of second order quantum difference operator over the sequence space lp (1 < p < ∞)

Neelam Kalita, Amar Jyoti Dutta
article en

Abstract

In this article, we study the spectrum, fine spectrum and boundedness property of second order quantum difference operator ∆2q (0 &lt; q &lt; 1) over the class of sequence lp (1 &lt; p &lt; ∞), the pth summable sequence space. The second order quantum difference operator ∆2q is a lower triangular triple band matrix ∆2q(1,−(1+ q),q). We also determine the approximate point spectrum, defect spectrum, compression spectrum, and Goldberg classification of the operator on the class of sequence. We obtained the results by solving an infinite system of linear equations and computing the inverse of a lower triangular infinite matrix. We also provide appropriate examples along with graphical representations where necessary.

BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICSVol. 118(2)
Gauhati University (IN)
Openalex Percentile: Top 85%
Approximation Theory and Sequence Spaces
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