The coloring problem of graph is the classical field of graph theory which is widely used in the network structure and practical life. The coloring problem is becoming a hot topic in recent years. However, the total coloring, especially adjacent vertex-distinguishing total coloring is a difficult point of the coloring problem. For a necklace, the adjacent vertex-distinguishing total coloring, the adjacent vertex-distinguishing vertex edge total coloring, and the incidence adjacent vertex-distinguishing total coloring are discussed when h≥3 (h is able to determine the number of vertices of necklace, h means that the necklace has 2h+2 vertices in the Nh). Through setting up a corresponding relation between the set of vertices and edges and the set of color, the corresponding chromatic numbers of the adjacent vertex-distinguishing total coloring, the adjacent vertex-distinguishing vertex edge total coloring, and the incidence adjacent vertex-distinguishing total coloring are obtained, the chromatic numbers for a necklace are five, three, and four, respectively. At the same time, the corresponding coloring schemes are given.
LU Jianli;REN Fengxia;MA Meilin
. Several Coloring Problems Involving the Necklace[J]. Science & Technology Review, 2012
, 30(7)
: 44
-47
.
DOI: 10.3981/j.issn.1000-7857.2012.07.007