Applied Mathematics
Volume 5, Issue 10 (June 2014)
ISSN Print: 2152-7385 ISSN Online: 2152-7393
Google-based Impact Factor: 0.96 Citations
A Note on the Nullity of Unicyclic Graphs ()
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ABSTRACT
The nullity of a graph is the multiplicity of the eigenvalue zero in its spectrum. In this paper we show the expression of the nullity and nullity set of unicyclic graphs with n vertices and girth r, and characterize the unicyclic graphs with extremal nullity.
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