Finite Group Databasebeta
Cayley diagram

C7⋊D7 #1029

order98
isoclinismisoclinic class of C7⋊D7
automorphismAut(G) order 98784
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C7

Aliases

unambiguous semidirect productC7⋊D7

Splittings

Fitting, socle, derived, SylowC72 ⋊ C2

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC72C2
LCSG ▷ C72
UCSC1

20 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 14
transitive degreeμt(G) = 49

A minimal faithful permutation representation — 3 generators on 14 points:

(2,3)(4,5)(6,7)(9,10)(11,12)(13,14);(8,9,11,13,14,12,10);(1,2,4,6,7,5,3)

Polycyclic presentation:

2,7^2|b^a=b^6,c^a=c^6

Conjugacy classes & character table

26 conjugacy classes — view the full character table.

Relationships

derived subgroup of#5997⋊C2, #87658, D72⋊C4, …
maximal subgroup of#5997, D72, C2×C7⋊D7, …
maximal normal subgroup of#5997, D72, C2×C7⋊D7, …
maximal quotient ofC7⋊Dic7, C2×C7⋊D7, C3×C7⋊D7, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(98, 4);