NEW VERTEX INVARIANTS AND TOPOLOGICAL INDEXES OF CHEMICAL GRAPHS BASED ON INFORMATION ON DISTANCES

被引:86
作者
BALABAN, AT [1 ]
BALABAN, TS [1 ]
机构
[1] CTR ORGAN CHEM,R-78100 BUCHAREST,ROMANIA
关键词
D O I
10.1007/BF01166951
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
By applying information theory to the set of topological distances from one vertex to all other graph vertices, one obtains four new types of vertex invariants (u(i), v(i), x(i), y(i)) which are real numbers (as opposed to integers). They may be combined in many ways to afford new topological indices. One such type leads to indices U, V, X and Y which show no degeneracy for alkanes with up to 15 vertices.
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页码:383 / 397
页数:15
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