d | ρ | Label | ID | ||
---|---|---|---|---|---|
C2xC4xD9 | 72 | C2xC4xD9 | 144,38 |
extension | φ:Q→Aut N | d | ρ | Label | ID |
---|---|---|---|---|---|
C2.1(C4xD9) = C8xD9 | central extension (φ=1) | 72 | 2 | C2.1(C4xD9) | 144,5 |
C2.2(C4xD9) = C4xDic9 | central extension (φ=1) | 144 | C2.2(C4xD9) | 144,11 | |
C2.3(C4xD9) = C8:D9 | central stem extension (φ=1) | 72 | 2 | C2.3(C4xD9) | 144,6 |
C2.4(C4xD9) = Dic9:C4 | central stem extension (φ=1) | 144 | C2.4(C4xD9) | 144,12 | |
C2.5(C4xD9) = D18:C4 | central stem extension (φ=1) | 72 | C2.5(C4xD9) | 144,14 |