arc transitive
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Universal highly arc transitive digraphs | opg | solved | ★★★ | 2007-10-21 |
| Highly arc transitive two ended digraphs | opg | disproved | ★★ | 2007-10-29 |
| Title | Source | Status | Imp. | Posted |
|---|---|---|---|---|
| Universal highly arc transitive digraphs | opg | solved | ★★★ | 2007-10-21 |
| Highly arc transitive two ended digraphs | opg | disproved | ★★ | 2007-10-29 |