Bounds on Randic indices
Bounds on Randic indices
复制标题
Randic 指数的界限
DOI:
10.1016/j.disc.2009.03.036
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发表时间:
2009-08
影响因子:
0.8
通讯作者:
Shi, Lingsheng
中科院分区:
文献类型:
--
作者:
Shi, Lingsheng
The general Randić index of a molecular graph G is the sum of [d(u)d(v)]αover all edges uv∈G, where d(v) denotes the degree of the vertex v in G and α is an arbitrary number. When α=−1/2, it is called the Randić index. Delorme et al. stated a best possible lower bound on the Randić index of a triangle-free graph with given minimum degree. Their false proof was pointed out by Liu et al. In this note, we derive some sharp bounds on the general Randić index which implies their lower bound for triangle-free graphs of order n with maximum degree at most n/4, and also prove it for triangle-free graphs with small minimum degree.
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DOI:
10.1016/j.ejor.2006.02.035
发表时间:
2007-07
期刊:
Eur. J. Oper. Res.
影响因子:
--
作者:
Ljiljana Pavlović
通讯作者:
Ljiljana Pavlović
影响因子:
1.7
作者:
Huiqing Liu;Mei Lu;F. Tian
通讯作者:
Huiqing Liu;Mei Lu;F. Tian
影响因子:
15
作者:
RANDIC, M
通讯作者:
RANDIC, M
影响因子:
0.8
作者:
Delorme, C;Favaron, O;Rautenbach, D
通讯作者:
Rautenbach, D
DOI:
--
发表时间:
1998-12
期刊:
Ars Comb.
影响因子:
--
作者:
B. Bollobás;P. Erdös
通讯作者:
B. Bollobás;P. Erdös