Open AccessSome Results on the Signless Laplacian Spectra of Unicyclic Graphs
Author(s) -
Muhuo Liu
Publication year - 2011
Publication title -
isrn algebra
Language(s) - English
Resource type - Journals
eISSN - 2090-6293
pISSN - 2090-6285
DOI - 10.5402/2011/282940
Subject(s) - combinatorics , mathematics , spectral line , class (philosophy) , discrete mathematics , physics , computer science , artificial intelligence , astronomy
We determine the second to fourth largest (resp. the second smallest) signless Laplacian spectral radii and the second to fourth largest signless Laplacian spreads together with the corresponding graphs in the class of unicyclic graphs with n vertices. Moreover, we prove that one class of unicyclic graphs are determined by their signless Laplacian spectra.
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