Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Total Colorings of Embedded Graphs with No 3-Cycles Adjacent to 4-Cycles
oleh: Wang Bing, Wu Jian-Liang, Sun Lin
Format: | Article |
---|---|
Diterbitkan: | University of Zielona Góra 2018-11-01 |
Deskripsi
A total-k-coloring of a graph G is a coloring of V ∪ E using k colors such that no two adjacent or incident elements receive the same color. The total chromatic number χ′′(G) of G is the smallest integer k such that G has a total-k-coloring. Let G be a graph embedded in a surface of Euler characteristic ε ≥ 0. If G contains no 3-cycles adjacent to 4-cycles, that is, no 3-cycle has a common edge with a 4-cycle, then χ′′(G) ≤ max{8,Δ+1}.