Geodesic
Remarks on the bounds of graph energy in terms of vertex cover number or matching number
Czechoslovak Mathematical Journal, Tome 71 (2021) no. 2, pp. 309-319.

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We give a novel upper bound on graph energy in terms of the vertex cover number, and present a complete characterization of the graphs whose energy equals twice their matching number.
DOI : 10.21136/CMJ.2021.0190-19
Classification : 05C50
Keywords: graph energy; vertex cover number; matching number; bound 
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Chen, Xiaodan; Liu, Xiaoqian. Remarks on the bounds of graph energy in terms of vertex cover number or matching number. Czechoslovak Mathematical Journal, Tome 71 (2021) no. 2, pp. 309-319. doi : 10.21136/CMJ.2021.0190-19. http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2021.0190-19/

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