planar
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Degenerate colorings of planar graphs | opg | partial | ★★★ | 2008-05-21 |
| The Two Color Conjecture | opg | partial | ★★ | 2007-03-26 |
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Degenerate colorings of planar graphs | opg | partial | ★★★ | 2008-05-21 |
| The Two Color Conjecture | opg | partial | ★★ | 2007-03-26 |