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Publishing Language: Chinese | Open Access

The Laplacian spectral radii ordering of unbalanced signed bicyclic graphs

Deming LI( ), Jie WANG
School of Mathematical Sciences, Capital Normal University, Beijing 100048
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Abstract

In this paper, the distribution law of the Laplacian eigenvalues from the first to the sixth of the unbalanced signed bicyclic graphs is studied, some inaccuracies of the existing conclusions are corrected, the existing results are generalized, and the legend of the extreme value is given.

Keywords

unbalanced signed bicyclic graphsbicyclic graphspectral radiusLaplacian matrixcharacteristic polynomial

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Journal of Capital Normal University (Natural Science Edition)
Volume 45 Issue 1,
February 2024
Pages 3-8
DOI: 10.19789/j.1004-9398.2024.01.001

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LI D, WANG J. The Laplacian spectral radii ordering of unbalanced signed bicyclic graphs. Journal of Capital Normal University (Natural Science Edition), 2024, 45(1): 3-8. https://doi.org/10.19789/j.1004-9398.2024.01.001

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Received: 20 March 2023
Published: 01 February 2024
© The editorial department of Journal of Capital Normal University (Natural Science Edition) 2025.

This is an open access article under the CC BY-NC-ND 4.0 license (https://creativecommons.org/licenses/by-nc-nd/4.0/).