Some necessary conditions of non-tree harmonious graphs and classes of non-harmonious graphs. (Chinese. English summary) Zbl 1238.05227
Summary: Some necessary conditions were obtained for hauuonious graphs, regular harmonious graphs and Euler harmonious graphs; several non-harmonious graphs classes were showed. The harmonious graphs that contained the even cycle with the same vertices were constructed.
MSC:
| 05C78 | Graph labelling (graceful graphs, bandwidth, etc.) |
