Finite Group Databasebeta

D7988 #30630438

order15976
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD7988
unambiguous semidirect productC4⋊D1997

Splittings

FittingC4×C1997 ⋊ C2
SylowC1997 ⋊ D4

Subgroups

subgroupG/H
center, FrattiniC2C2×D1997
commutator, socle, cosocleC2×C1997C22
FittingC4×C1997C2
hypercenterC4D1997
hypocenterC1997D4
LCSG ▷ C2×C1997 ▷ C1997
UCSC1 ◁ C2 ◁ C4

16 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 2001
transitive degreeμt(G) = 7988

A minimal faithful permutation representation — 2 generators on 2001 points:

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Polycyclic presentation:

2^3,1997|b^a=bc,d^a=d^1996,d^b=d^1996

Conjugacy classes & character table

3997 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup of#44544121, D15976, #44544123, …
maximal normal subgroup of#44544121, D15976, #44544123, …
maximal quotient of#44544113, C4⋊Dic1997, D15976, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(15976, 10);