On the Laplacian energy of a graph
Czechoslovak Mathematical Journal, Tome 56 (2006) no. 4, pp. 1207-1213.

Voir la notice de l'article dans Czech Digital Mathematics Library

In this paper we consider the energy of a simple graph with respect to its Laplacian eigenvalues, and prove some basic properties of this energy. In particular, we find the minimal value of this energy in the class of all connected graphs on $n$ vertices $(n=1,2,\ldots )$. Besides, we consider the class of all connected graphs whose Laplacian energy is uniformly bounded by a constant $\alpha \ge 4$, and completely describe this class in the case $\alpha =40$.
Classification : 05C50
Mots-clés : simple graphs; Laplacian spectrum; energy of a graph 
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     author = {Lazi\'c, Mirjana},
     title = {On the {Laplacian} energy of a graph},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1207--1213},
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     volume = {56},
     number = {4},
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     zbl = {1164.05408},
     language = {en},
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Lazić, Mirjana. On the Laplacian energy of a graph. Czechoslovak Mathematical Journal, Tome 56 (2006) no. 4, pp. 1207-1213. https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_4_a9/