Implicit representations and factorial properties of graphs
Implicit representations and factorial properties of graphs
复制标题
图的隐式表示和阶乘属性
DOI:
10.1016/j.disc.2014.09.008
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发表时间:
2015
影响因子:
0.8
通讯作者:
Atminas A
中科院分区:
文献类型:
--
作者:
Atminas A
The idea of implicit representation of graphs was introduced in Kannan et al.(1992) and can be defined as follows. A representation of an n-vertex graph G is said to be implicit if it assigns to each vertex of G a binary code of length O (log n) so that the adjacency of two vertices is a function of their codes. Since an implicit representation of an n-vertex graph uses O (n log n) bits, any class of graphs admitting such a representation contains 2 O (n log n) labelled graphs with n vertices. In the terminology of Balogh et al.(2000) such classes have at most factorial speed of growth. In this terminology, the implicit graph conjecture can be stated as follows: every class with at most factorial speed of growth which is hereditary admits an implicit representation. The question of deciding whether a given hereditary class has at most factorial speed of growth is far from being trivial. In the present paper, we introduce a number of tools simplifying this question. Some of them can be used to obtain a stronger conclusion on the existence of an implicit representation. We apply our tools to reveal new hereditary classes with the factorial speed of growth. For many of them we show the existence of an implicit representation.
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影响因子:
0.8
作者:
J. Spinrad
通讯作者:
J. Spinrad
影响因子:
0.9
作者:
Peter Allen
通讯作者:
Peter Allen
影响因子:
0.7
作者:
Peter Allen;V. Lozin;M. Rao
通讯作者:
M. Rao
影响因子:
0.9
作者:
V. Lozin;V. Zamaraev
通讯作者:
V. Zamaraev
DOI:
--
发表时间:
2012
期刊:
European journal of combinatorics (Print)
影响因子:
--
作者:
V. Lozin;Colin Mayhill;V. Zamaraev
通讯作者:
V. Zamaraev