| 摘要: |
| 探讨三类由m个有向圈C4构成的有向图的优美性.给出他们的优美标号,证明这三类图都是优美图. |
| 关键词: 有向图 有向圈 优美标号 优美图 |
| DOI： |
| 投稿时间：2012-08-14修订日期：2013-02-18 |
| 基金项目:黄冈师范学院自然科学基金项目(项目编号:2012013703)资助。 |
|
| Gracefulness of Several Types Digraphs |
|
XU Yun
|
| (College of Mathematics and Computing Sciences, Huanggang Normal University, Huanggang, Hubei, 438000, China) |
| Abstract: |
| In this paper, gracefulness of three types digraphs that was composed of m directed circles C4 was explored and verified by giving their graceful labeling and mathematical proofs. |
| Key words: digraphs directed circle graceful labeling graceful graphs |
