Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #120 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C22×C4 | C23 |
| commutator | C22 | C2×C42 |
| socle, prime radical | C23 | C22×C4 |
| LCS | G ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
120 conjugacy classes of subgroups.
| minimal degree | μ(G) = 28 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 28 points:
(5,6)(7,10)(8,9)(11,12)(13,14,16,19,17,20,23,26)(15,18,22,25,21,24,27,28);(1,2,3,4)(6,9)(10,12)(13,15)(14,18)(16,22)(17,21)(19,25)(20,24)(23,27)(26,28);(5,7,8,11)(6,10,9,12)(15,21)(18,24)(22,27)(25,28)Polycyclic presentation:
2^7|a^2=e,b^2=f,c^2=d,e^2=g,b^a=bd,c^b=cg56 conjugacy classes — view the full character table.
| maximal subgroup of | #7144, #8141, #8142, … |
| maximal normal subgroup of | #7144, #8141, #8142, … |
| maximal quotient of | #8132, #8133, #8134, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 478);