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\iteman{io-port 05850465}
\itemau{Liu, Ying; Sun, Yu Qin}
\itemti{On the second Laplacian spectral moment of a graph.}
\itemso{Czech. Math. J. 60, No. 2, 401-410 (2010).}
\itemab
Summary: {\it M. Lazi\'{c}} [Czech. Math. J. 56, No.~4, 1207--1213 (2006; Zbl 1164.05408)]) gave the definition of Laplacian energy of a graph $G$ and proved $\operatorname{LE}(G)\geq 6n-8$, where equality holds if and only if $G=P_n$. In this paper, we consider the relation between the Laplacian energy and the chromatic number of a graph $G$ and give an upper bound for the Laplacian energy on a connected graph.
\itemrv{~}
\itemcc{}
\itemut{Laplacian eigenvalue; Laplacian energy; chromatic number; complement}
\itemli{doi:10.1007/s10587-010-0043-1}
\end