Axiomatic characterization of the interval function of a block graph

被引:12
|
作者
Balakrishnan, Kannan [1 ]
Changat, Manoj [2 ]
Lakshmikuttyamma, Anandavally K. [3 ]
Mathew, Joseph [4 ]
Mulder, Henry Martyn [5 ]
Narasimha-Shenoi, Prasanth G. [6 ]
Narayanan, N. [7 ]
机构
[1] Cochin Univ Sci & Technol, Dept Comp Applicat, Cochin 682022, Kerala, India
[2] Univ Kerala, Dept Futures Studies, Thiruvananthapuram 695034, Kerala, India
[3] Mar Ivanios Coll, Thiruvananthapuram 695015, Kerala, India
[4] Univ Kerala, Dept Futures Studies, C GRAF, Thiruvananthapuram 695034, Kerala, India
[5] Erasmus Univ, Econometr Inst, NL-3000 DR Rotterdam, Netherlands
[6] Govt Coll, Dept Math, Chittur 678104, Palakkad, India
[7] Indian Inst Technol, Dept Math, Madras 600036, Tamil Nadu, India
关键词
Block graph; Tree; Interval function; Transit function; PSEUDO-MODULAR GRAPHS; CONNECTED GRAPH; PATH CONVEXITY; BETWEENNESS; FINITE;
D O I
10.1016/j.disc.2015.01.004
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In 1952 Sholander formulated an axiomatic characterization of the interval function of a tree with a partial proof. In 2011 Chvatal et al. gave a completion of this proof. In this paper we present a characterization of the interval function of a block graph using axioms on an arbitrary transit function R. From this we deduce two new characterizations of the interval function of a tree. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:885 / 894
页数:10
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