Finite Group DatabasebetaFinite Group Databasebeta| order | 440 |
| isoclinism | isoclinic class of Dic22 |
| automorphism | Aut(G) = C22×C4×AGL(1,𝔽11) (order 1760) · Inn(G) = C2×D11 · Out(G) = C2×C4×C5 |
| homology | Abelianization (H1) = C22×C5 · Schur multiplier (H2) = C2 |
| direct product | C5×C22⋊D11 |
| unambiguous semidirect product | C22⋊(C5×D11) |
| Fitting | C22×C5×C11 ⋊ C2 |
| Hall | C5×C11 ⋊ D4 |
| Sylow | C11 ⋊ C5×D4 |
| subgroup | G/H | |
|---|---|---|
| center | C2×C5 | C2×D11 |
| commutator, cosocle | C2×C11 | C22×C5 |
| Frattini | C2 | C2×C5×D11 |
| Fitting | C22×C5×C11 | C2 |
| socle | C2×C5×C11 | C22 |
| hypercenter | C22×C5 | D11 |
| hypocenter | C11 | C5×D4 |
| LCS | G ▷ C2×C11 ▷ C11 | |
| UCS | C1 ◁ C2×C5 ◁ C22×C5 | |
32 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 220 |
A minimal faithful permutation representation — 2 generators on 20 points:
(1,2,4,6,8,10,11,9,7,5,3)(13,15)(16,17,18,19,20);(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)125 conjugacy classes — view the full character table.
| maximal subgroup of | #11724996, #11724997, D5×C22⋊D11, … |
| maximal normal subgroup of | #11724996, #11724997, D5×C22⋊D11, … |
| maximal quotient of | C5×Dic11⋊C4, C5×(C2×D11)⋊C4, C5×#4323, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(440, 28);