Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 5 |
| isoclinism | isoclinic class of D32 |
| automorphism | Aut(G) = C22×#12067 (order 1024) · Inn(G) = D16 · Out(G) = C22×C8 |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | D16 |
| commutator | C16 | C2×C4 |
| Frattini, cosocle | C2×C16 | C22 |
| prime radical | C2×D16 | C2 |
| LCS | G ▷ C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C2×C4 ◁ C2×C8 ◁ C2×C16 ◁ G | |
| LECS | G ▷ C2×C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
41 conjugacy classes of subgroups.
| minimal degree | μ(G) = 36 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 2 generators on 36 points:
(1,2,3,4)(5,6)(7,11)(8,20)(9,23)(10,15)(12,16)(13,17)(14,21)(18,30)(19,26)(22,36)(24,32)(25,31)(27,35)(28,33)(29,34);(6,11)(7,16)(8,17)(9,21)(12,13)(14,30)(15,26)(18,35)(19,33)(20,24)(22,34)(23,25)(27,36)(28,29)(31,32)Polycyclic presentation:
2^7|a^2=d,c^2=ef,e^2=fg,f^2=g,b^a=bc,c^a=ce,e^a=ef,f^a=fg,c^b=ce,e^b=ef,f^b=fg38 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#1415, #13615, #13616, … |
| maximal normal subgroup of | C2×#1415, #13615, #13616, … |
| maximal quotient of | #7383, #7418, #7444, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 147);