Finite Group Databasebeta

D18480 #72273580

order36960
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD18480

Splittings

FittingC3×C5×C7×C11×C16 ⋊ C2
HallC3×C5×C7×C11 ⋊ D16
HallC5×C7×C11 ⋊ D48
HallC3×C7×C11 ⋊ D80
HallC3×C5×C11 ⋊ D112
HallC3×C5×C7 ⋊ D176
HallC7×C11 ⋊ D240
HallC5×C11 ⋊ D336
HallC5×C7 ⋊ D528
HallC3×C11 ⋊ D560
HallC3×C7 ⋊ D880
HallC3×C5 ⋊ D1232
SylowC11 ⋊ D1680
SylowC7 ⋊ D2640
SylowC5 ⋊ D3696
SylowC3 ⋊ D6160

Subgroups

subgroupG/H
centerC2D9240
commutator, cosocleC3×C5×C7×C8×C11C22
FrattiniC8C2×D1155
FittingC3×C5×C7×C11×C16C2
socleC2×C3×C5×C7×C11D8
hypercenterC16D1155
hypocenterC3×C5×C7×C11D16
LCSG ▷ C3×C5×C7×C8×C11 ▷ C3×C4×C5×C7×C11 ▷ C2×C3×C5×C7×C11 ▷ C3×C5×C7×C11
UCSC1 ◁ C2 ◁ C4 ◁ C8 ◁ C16

224 conjugacy classes of subgroups; only the 83 normal subgroups are shown.

normal subgroups only

This group has 224 conjugacy classes of subgroups — too many to draw. Only its 83 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 42
transitive degreeμt(G) = 18480

A minimal faithful permutation representation — 2 generators on 42 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16)(17,18,19)(20,21,22,23,24)(25,26,27,28,29,30,31)(32,33,34,35,36,37,38,39,40,41,42);(2,16)(3,15)(4,14)(5,13)(6,12)(7,11)(8,10)(18,19)(21,24)(22,23)(26,31)(27,30)(28,29)(33,42)(34,41)(35,40)(36,39)(37,38)

Polycyclic presentation:

2^5,3,5,7,11|b^2=cd,c^2=de,d^2=e,b^a=bc,c^a=cd,d^a=de,f^a=f^2,g^a=g^4,h^a=h^6,i^a=i^10

Conjugacy classes & character table

9243 conjugacy classes. The character table is too large to display.

GAP

Past the SmallGroups library coverage — no SmallGroups id. Construct it from its polycyclic presentation:

gap> F := FreeGroup(IsSyllableWordsFamily, "a", "b", "c", "d", "e", "f", "g", "h", "i");;
gap> coll := SingleCollector(F, [2, 2, 2, 2, 2, 3, 5, 7, 11]);;
gap> SetPower(coll, 2, F.3*F.4);;
gap> SetPower(coll, 3, F.4*F.5);;
gap> SetPower(coll, 4, F.5);;
gap> SetConjugate(coll, 2, 1, F.2*F.3);;
gap> SetConjugate(coll, 3, 1, F.3*F.4);;
gap> SetConjugate(coll, 4, 1, F.4*F.5);;
gap> SetConjugate(coll, 6, 1, F.6^2);;
gap> SetConjugate(coll, 7, 1, F.7^4);;
gap> SetConjugate(coll, 8, 1, F.8^6);;
gap> SetConjugate(coll, 9, 1, F.9^10);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);