Finite Group Databasebeta
Cayley diagram

H(3,𝔽7) #66803

order343
nilpotency class2
isoclinismisoclinic class of H(3,𝔽7)
automorphism?
homologyAbelianization (H1) = C72 · Schur multiplier (H2) = C72

Aliases

extraspecial7+1+2
unitriangularUT(3,𝔽7)
HeisenbergH(3,𝔽7)
unambiguous semidirect productC72⋊C7

Subgroups

subgroupG/H
center, commutator, Frattini, socle, cosocleC7C72
LCSG ▷ C7 ▷ C1
UCSC1 ◁ C7 ◁ G
LECSG ▷ C7 ▷ C1

19 conjugacy classes of subgroups.

Full subgroup data →

Presentation

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

A minimal faithful permutation representation — 2 generators on 49 points:

(1,2,4,8,15,26,35)(3,6,10,17,28,37,44)(5,11,21,33,42,49,43)(7,13,20,30,39,36,45)(9,18,31,41,48,34,12)(14,24,19,32,27,38,46)(16,29,40,47,25,23,22);(2,5,12,23,24,13,6)(4,9,19,10,11,22,20)(8,16,17,18,30,21,32)(15,27,33,39,31,28,29)(26,36,40,42,37,38,41)(35,44,45,46,47,48,49)

Polycyclic presentation:

7^3|b^a=bc

Conjugacy classes & character table

55 conjugacy classes — view the full character table.

Relationships

derived subgroup of#10621859, #11759980, #11759981, …
Fitting subgroup of(C7⋊D7)⋊C7, #10621859, #11759980, …
maximal subgroup of(C7⋊D7)⋊C7, #10621859, C2×H(3,𝔽7), …
maximal normal subgroup of(C7⋊D7)⋊C7, #10621859, C2×H(3,𝔽7), …
maximal quotient ofC2×H(3,𝔽7), C3×H(3,𝔽7), C5×H(3,𝔽7), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(343, 3);