2-距离色数
2-distance chromatic number
全色数
total chromatic number
total coloring number
the total chromatic number
total chromatic
边面染色数
edge-face chromatic number
边色数
edge chromatic number
the edge chromatic number
chromatic number
chromatic index
edge-chromatic index
Chromatix index
chromatic indices
分色数
fractional chromatic number