Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #360 |
| automorphism | Aut(G) = #72231699 (order 1024) · Inn(G) = #102 · Out(G) = C25 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C4 | #102 |
| commutator | C8 | C22×C4 |
| Frattini, cosocle | C2×C8 | C23 |
| socle | C2 | C2×#102 |
| prime radical | C2×#135 | C2 |
| LCS | G ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C4 ◁ C22×C4 ◁ C22×C8 ◁ G | |
| LECS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
112 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 3 generators on 32 points:
(1,2)(3,12,15,29)(4,8)(5,19)(6,11)(7,14,23,31)(9,17)(10,18)(13,28,16,25)(20,27,32,22)(21,24)(26,30);(1,3)(2,7)(4,13)(5,20)(6,15)(8,22)(9,25)(10,27)(11,23)(12,24)(14,30)(16,18)(17,31)(19,29)(21,32)(26,28);(1,4,6,18)(2,8,11,10)(3,13,15,16)(5,17,21,30)(7,22,23,27)(9,24,26,19)(12,28,29,25)(14,20,31,32)Polycyclic presentation:
2^7|a^2=e,c^2=g,d^2=f,f^2=g,b^a=bd,d^a=df,f^a=fg,d^b=dfg,e^b=eg,f^b=fg32 conjugacy classes — view the full character table.
| maximal subgroup of | #12646, #12649, #12741, … |
| maximal normal subgroup of | #12646, #12649, #12741, … |
| maximal quotient of | #11597, #11599, #11600, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 877);