THE TURAN NUMBER OF THE GRAPH 2P5

被引:16
作者
Bielak, Halina [1 ]
Kieliszek, Sebastian [1 ]
机构
[1] Marie Curie Sklodowska Univ, Sq Maria Curie Sklodowska 5, PL-20031 Lublin, Poland
关键词
forest; tree; Turan number;
D O I
10.7151/dmgt.1883
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We give the Turan number ex(n, 2P(5)) for all positive integers n, improving one of the results of Bushaw and Kettle [Turan numbers of multiple paths and equibipartite forests, Combininatorics, Probability and Computing, 20 (2011) 837-853]. In particular we prove that ex(n,2P(5)) = 3n - 5 for n >= 18.
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页码:683 / 694
页数:12
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