Graphs minimal with respect to contractions in some subfamilies of maximal planar graphs
نویسندگان
چکیده
منابع مشابه
SIGNLESS LAPLACIAN SPECTRAL MOMENTS OF GRAPHS AND ORDERING SOME GRAPHS WITH RESPECT TO THEM
Let $G = (V, E)$ be a simple graph. Denote by $D(G)$ the diagonal matrix $diag(d_1,cdots,d_n)$, where $d_i$ is the degree of vertex $i$ and $A(G)$ the adjacency matrix of $G$. The signless Laplacianmatrix of $G$ is $Q(G) = D(G) + A(G)$ and the $k-$th signless Laplacian spectral moment of graph $G$ is defined as $T_k(G)=sum_{i=1}^{n}q_i^{k}$, $kgeqslant 0$, where $q_1$,$q_2$, $cdots$, $q_n$ ...
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متن کاملContracting planar graphs to contractions of triangulations
Article history: Received 12 December 2010 Received in revised form 24 February 2011 Accepted 7 March 2011 Available online 15 March 2011
متن کاملsignless laplacian spectral moments of graphs and ordering some graphs with respect to them
let $g = (v, e)$ be a simple graph. denote by $d(g)$ the diagonal matrix $diag(d_1,cdots,d_n)$, where $d_i$ is the degree of vertex $i$ and $a(g)$ the adjacency matrix of $g$. the signless laplacianmatrix of $g$ is $q(g) = d(g) + a(g)$ and the $k-$th signless laplacian spectral moment of graph $g$ is defined as $t_k(g)=sum_{i=1}^{n}q_i^{k}$, $kgeqslant 0$, where $q_1$,$q_2$, $cdots$, $q_n$ ...
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ژورنال
عنوان ژورنال: Applicationes Mathematicae
سال: 1987
ISSN: 1233-7234,1730-6280
DOI: 10.4064/am-19-3-4-387-398