Sobre Finura Própria de Grafos
Resumo
Both graph classes of k-thin and proper k-thin graphs have recently been introduced generalizing interval and unit interval graphs, respectively. The complexity of the recognition of k-thin and proper k-thin are open, even for fixed k ≥ 2. In this work, we introduce a subclass of the proper 2-thin graphs, called proper 2-thin of precedence. For this class, we present a characterization and an efficient recognition algorithm.
Referências
Mannino, C., Oriolo, G., Ricci, F.„ Chandran, S. (2007). The stable set problem and the thinness of a graph. Operations Research Letters, 35:1–9.
Olariu, S. (1991). An optimal greedy heuristic to color interval graphs. Information Processing Letters, 37:21–25.
Roberts, F. (1969). Indifference graphs. Em Harary, F., editor, Proof Techniques in Graph Theory, p. 139–146. Academic Press, New York.
