Sharp bounds on the signless Laplacian Estrada index of graphs
Keyword(s):
Let G be a connected graph with n vertices and m edges. Let q1, q2,..., qn be the eigenvalues of the signless Laplacian matrix of G, where q1 ? q2 ? ... ? qn. The signless Laplacian Estrada index of G is defined as SLEE(G) = nPi=1 eqi. In this paper, we present some sharp lower bounds for SLEE(G) in terms of the k-degree and the first Zagreb index, respectively.
2009 ◽
Vol 3
(2)
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pp. 371-378
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Keyword(s):
2018 ◽
Vol 34
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pp. 191-204
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2019 ◽
Vol 12
(01)
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pp. 2050006
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2015 ◽
Vol 16
(2)
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pp. 1017-1024
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