@article{barik_laplacian_2015,
	title = {{ON} {THE} {LAPLACIAN} {SPECTRA} {OF} {PRODUCT} {GRAPHS}},
	volume = {9},
	issn = {1452-8630},
	url = {https://www.jstor.org/stable/43666206},
	abstract = {Graph products and their structural properties have been studied extensively by many researchers. We investigate the Laplacian eigenvalues and eigenvectors of the product graphs for the four standard products, namely, the Cartesian product, the direct product, the strong product and the lexicographic product. A complete characterization of Laplacian spectrum of the Cartesian product of two graphs has been done by Merris. We give an explicit complete characterization of the Laplacian spectrum of the lexicographic product of two graphs using the Laplacian spectra of the factors. For the other two products, we describe the complete spectrum of the product graphs in some particular cases. We supply some new results relating to the algebraic connectivity of the product graphs. We describe the characteristic sets for the Cartesian product and for the lexicographic product of two graphs. As an application we construct new classes of Laplacian integral graphs.},
	number = {1},
	urldate = {2022-05-29},
	journal = {Applicable Analysis and Discrete Mathematics},
	author = {Barik, S. and Bapat, R. B. and Pati, S.},
	year = {2015},
	note = {Publisher: University of Belgrade, Serbia},
	pages = {39--58},
}

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