Finite Group Databasebeta

D12956 #72235293

order25912
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD12956

Splittings

FittingC4×C41×C79 ⋊ C2
HallC41×C79 ⋊ D4
SylowC79 ⋊ D164
SylowC41 ⋊ D316

Subgroups

subgroupG/H
center, FrattiniC2C2×D3239
commutator, socle, cosocleC2×C41×C79C22
FittingC4×C41×C79C2
hypercenterC4D3239
hypocenterC41×C79D4
LCSG ▷ C2×C41×C79 ▷ C41×C79
UCSC1 ◁ C2 ◁ C4

32 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 124
transitive degreeμt(G) = 12956

A minimal faithful permutation representation — 2 generators on 124 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)(46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124);(2,4)(6,45)(7,44)(8,43)(9,42)(10,41)(11,40)(12,39)(13,38)(14,37)(15,36)(16,35)(17,34)(18,33)(19,32)(20,31)(21,30)(22,29)(23,28)(24,27)(25,26)(47,124)(48,123)(49,122)(50,121)(51,120)(52,119)(53,118)(54,117)(55,116)(56,115)(57,114)(58,113)(59,112)(60,111)(61,110)(62,109)(63,108)(64,107)(65,106)(66,105)(67,104)(68,103)(69,102)(70,101)(71,100)(72,99)(73,98)(74,97)(75,96)(76,95)(77,94)(78,93)(79,92)(80,91)(81,90)(82,89)(83,88)(84,87)(85,86)

Polycyclic presentation:

2^3,41,79|b^2=c,b^a=bc,d^a=d^40,e^a=e^78

Conjugacy classes & character table

6481 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD25912
maximal normal subgroup ofD25912
maximal quotient ofDic12956, D25912

GAP

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

gap> F := FreeGroup(IsSyllableWordsFamily, "a", "b", "c", "d", "e");;
gap> coll := SingleCollector(F, [2, 2, 2, 41, 79]);;
gap> SetPower(coll, 2, F.3);;
gap> SetConjugate(coll, 2, 1, F.2*F.3);;
gap> SetConjugate(coll, 4, 1, F.4^40);;
gap> SetConjugate(coll, 5, 1, F.5^78);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);