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XIAO En-li; SHU Jin-long; WEN Ren-kai, . The Laplacian Spectrum of Unicyclic Graphs[J]. Journal of East China Normal University (Natural Sciences), 2003, (2): 16-21.
Citation:
XIAO En-li; SHU Jin-long; WEN Ren-kai, . The Laplacian Spectrum of Unicyclic Graphs[J]. Journal of East China Normal University (Natural Sciences), 2003, (2): 16-21.
XIAO En-li; SHU Jin-long; WEN Ren-kai, . The Laplacian Spectrum of Unicyclic Graphs[J]. Journal of East China Normal University (Natural Sciences), 2003, (2): 16-21.
Citation:
XIAO En-li; SHU Jin-long; WEN Ren-kai, . The Laplacian Spectrum of Unicyclic Graphs[J]. Journal of East China Normal University (Natural Sciences), 2003, (2): 16-21.
Let G be a graph .The Laplacian matrix L(G)=D(G)-A(G)is the difference of the diagonal matrix of vertex degrees and the 0-1 adjacency matrix. Various aspects of the spectrum of this matrix of unicyclic graphs are investigated. Particular attention is given to the algebraic connecticity, the second least eigenvalue of the Laplacian matrix.