Finite Group DatabasebetaFinite Group DatabasebetaOrder 72.
11 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C3×Q8 | C3 | 1 | 1 | yes | maximal, characteristic |
| 2 | C2×C9 | — | 4 | 1 | no | maximal |
| 3 | C3×C4 | — | 3 | 1 | no | — |
| 4 | C9 | — | 4 | 1 | no | Sylow |
| 5 | Q8 | C9 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 6 | C2×C3 | A4 | 1 | 1 | yes | characteristic |
| 7 | C4 | — | 3 | 1 | no | — |
| 8 | C3 | SL(2,𝔽3) | 1 | 1 | yes | characteristic |
| 9 | C2 | C22⋊C9 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, socle, prime radical, hypercenter | C2×C3 | A4 |
| commutator, hypocenter | Q8 | C9 |
| Fitting, cosocle | C3×Q8 | C3 |
| LCS | G ▷ Q8 | |
| UCS | C1 ◁ C2×C3 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 5. Q8 | C9 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C3×Q8 | 3 |
| C2×C9 | 4 |