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ABSTRACT
In this paper, all connected graphs with three distinct signless Laplacian eigenvalues of which the second one is at most five are determined.
2010 Mathematics Subject Classification:
Acknowledgments
The first author is supported by the National Natural Science Foundation of China (Nos. 11901540 and 11671344) and the China Postdoctoral Science Foundation (No. 2019M652556). The second author is supported by the National Natural Science Foundation of China (No. 11771141) and the Fundamental Research Fund for the Central Universities (No. 222201714049).
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Funding
The first author is supported by the National Natural Science Foundation of China (Nos. 11901540 and 11671344) and the China Postdoctoral Science Foundation (No. 2019M652556). The second author is supported by the National Natural Science Foundation of China (No. 11771141) and the Fundamental Research Fund for the Central Universities (No. 222201714049).