Finite Group Databasebeta

D387 #11715879

order774
isoclinismisoclinic class of D387
automorphismAut(G) order 97524
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD387
unambiguous semidirect productC9⋊D43
unambiguous semidirect productC43⋊D9

Splittings

Fitting, derived, HallC9×C43 ⋊ C2
SylowC43 ⋊ D9
SylowC9 ⋊ D43

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC9×C43C2
FrattiniC3D129
socleC3×C43D3
LCSG ▷ C9×C43
UCSC1

12 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 52
transitive degreeμt(G) = 387

A minimal faithful permutation representation — 2 generators on 52 points:

(1,2,3,4,5,6,7,8,9)(10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52);(2,9)(3,8)(4,7)(5,6)(11,52)(12,51)(13,50)(14,49)(15,48)(16,47)(17,46)(18,45)(19,44)(20,43)(21,42)(22,41)(23,40)(24,39)(25,38)(26,37)(27,36)(28,35)(29,34)(30,33)(31,32)

Polycyclic presentation:

2,3,43,3|b^3=d,b^a=b^2d^2,c^a=c^42,d^a=d^2

Conjugacy classes & character table

195 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD9×D43, C2×D387, C5×D387, …
maximal normal subgroup ofD9×D43, C2×D387, C5×D387, …
maximal quotient ofDic387, C2×D387, C5×D387, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(774, 5);