Finite Group Databasebeta

#72236727

order1024
nilpotency class2
automorphism?
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C216

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, commutator, Frattini, socle, cosocleC25C25
LCSG ▷ C25 ▷ C1
UCSC1 ◁ C25 ◁ G
LECSG ▷ C25 ▷ C1

188565 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 5 generators on 20 points:

(2,4)(6,8)(10,12)(18,20);(2,4)(5,6,7,8)(10,12);(5,6)(7,8)(14,16)(18,20);(9,10)(11,12)(13,14)(15,16)(17,18)(19,20);(1,2)(3,4)(5,6)(7,8)(9,10)(11,12)

Polycyclic presentation:

2^10|b^2=g,b^a=bg,c^a=cg,c^b=cg,d^a=df,d^b=dh,d^c=di,e^a=ej,e^b=ej

Conjugacy classes & character table

184 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#72240147, #72250311, #72251043, …
maximal normal subgroup of#72240147, #72250311, #72251043, …
maximal quotient of#72236807, #72256433, C2×#72236727, …

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", "j");;
gap> coll := SingleCollector(F, [2, 2, 2, 2, 2, 2, 2, 2, 2, 2]);;
gap> SetPower(coll, 2, F.7);;
gap> SetConjugate(coll, 2, 1, F.2*F.7);;
gap> SetConjugate(coll, 3, 1, F.3*F.7);;
gap> SetConjugate(coll, 3, 2, F.3*F.7);;
gap> SetConjugate(coll, 4, 1, F.4*F.6);;
gap> SetConjugate(coll, 4, 2, F.4*F.8);;
gap> SetConjugate(coll, 4, 3, F.4*F.9);;
gap> SetConjugate(coll, 5, 1, F.5*F.10);;
gap> SetConjugate(coll, 5, 2, F.5*F.10);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);