d | ρ | Label | ID | ||
---|---|---|---|---|---|
C22xDic9 | 144 | C2^2xDic9 | 144,45 |
extension | φ:Q→Aut N | d | ρ | Label | ID |
---|---|---|---|---|---|
C2.1(C2xDic9) = C2xC9:C8 | central extension (φ=1) | 144 | C2.1(C2xDic9) | 144,9 | |
C2.2(C2xDic9) = C4xDic9 | central extension (φ=1) | 144 | C2.2(C2xDic9) | 144,11 | |
C2.3(C2xDic9) = C4.Dic9 | central stem extension (φ=1) | 72 | 2 | C2.3(C2xDic9) | 144,10 |
C2.4(C2xDic9) = C4:Dic9 | central stem extension (φ=1) | 144 | C2.4(C2xDic9) | 144,13 | |
C2.5(C2xDic9) = C18.D4 | central stem extension (φ=1) | 72 | C2.5(C2xDic9) | 144,19 |