Labeling
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Graceful Tree Conjecture | opg | partial | ★★★ | 2007-07-13 |
| Good Edge Labelings | opg | partial | ★★ | 2011-06-30 |
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Graceful Tree Conjecture | opg | partial | ★★★ | 2007-07-13 |
| Good Edge Labelings | opg | partial | ★★ | 2011-06-30 |