Grunbaum, Branko
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Grunbaum's Conjecture | opg | disproved | ★★★ | 2007-04-04 |
| Every 4-connected toroidal graph has a Hamilton cycle | opg | open | ★★ | 2013-03-07 |
| 4-regular 4-chromatic graphs of high girth | opg | open | ★★ | 2008-06-18 |
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Grunbaum's Conjecture | opg | disproved | ★★★ | 2007-04-04 |
| Every 4-connected toroidal graph has a Hamilton cycle | opg | open | ★★ | 2013-03-07 |
| 4-regular 4-chromatic graphs of high girth | opg | open | ★★ | 2008-06-18 |