Finite Group Databasebeta

D980 #14519929

order1960
automorphismAut(G) order 329280
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD980
unambiguous semidirect productC4⋊D245

Splittings

FittingC4×C5×C49 ⋊ C2
HallC5×C49 ⋊ D4
SylowC49 ⋊ D20
SylowC5 ⋊ D196

Subgroups

subgroupG/H
centerC2C2×D245
commutator, cosocleC2×C5×C49C22
FrattiniC2×C7C2×D35
FittingC4×C5×C49C2
socleC2×C5×C7C2×D7
hypercenterC4D245
hypocenterC5×C49D4
LCSG ▷ C2×C5×C49 ▷ C5×C49
UCSC1 ◁ C2 ◁ C4

48 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 58
transitive degreeμt(G) = 980

A minimal faithful permutation representation — 2 generators on 58 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);(2,4)(6,9)(7,8)(11,58)(12,57)(13,56)(14,55)(15,54)(16,53)(17,52)(18,51)(19,50)(20,49)(21,48)(22,47)(23,46)(24,45)(25,44)(26,43)(27,42)(28,41)(29,40)(30,39)(31,38)(32,37)(33,36)(34,35)

Polycyclic presentation:

2^3,5,7^2|b^2=c,e^7=f,b^a=bc,d^a=d^4,e^a=e^6f^6,f^a=f^6

Conjugacy classes & character table

493 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD2940, D1960, D4900, …
maximal normal subgroup ofD1960
maximal quotient ofD2940, D1960, Dic980, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1960, 26);