Properties

Label 9T7
Degree $9$
Order $27$
Cyclic no
Abelian no
Solvable yes
Primitive no
$p$-group yes
Group: $C_3^2:C_3$

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Show commands: Magma

magma: G := TransitiveGroup(9, 7);
 

Group action invariants

Degree $n$:  $9$
magma: t, n := TransitiveGroupIdentification(G); n;
 
Transitive number $t$:  $7$
magma: t, n := TransitiveGroupIdentification(G); t;
 
Group:  $C_3^2:C_3$
CHM label:   $E(9):3=[3^{2}]3$
Parity:  $1$
magma: IsEven(G);
 
Primitive:  no
magma: IsPrimitive(G);
 
magma: NilpotencyClass(G);
 
$\card{\Aut(F/K)}$:  $3$
magma: Order(Centralizer(SymmetricGroup(n), G));
 
Generators:  (1,2,9)(3,4,5)(6,7,8), (3,4,5)(6,8,7), (1,4,7)(2,5,8)(3,6,9)
magma: Generators(G);
 

Low degree resolvents

|G/N|Galois groups for stem field(s)
$3$:  $C_3$ x 4
$9$:  $C_3^2$

Resolvents shown for degrees $\leq 47$

Subfields

Degree 3: $C_3$

Low degree siblings

9T7 x 3, 27T3

Siblings are shown with degree $\leq 47$

A number field with this Galois group has no arithmetically equivalent fields.

Conjugacy classes

LabelCycle TypeSizeOrderRepresentative
$ 1, 1, 1, 1, 1, 1, 1, 1, 1 $ $1$ $1$ $()$
$ 3, 3, 1, 1, 1 $ $3$ $3$ $(3,4,5)(6,8,7)$
$ 3, 3, 1, 1, 1 $ $3$ $3$ $(3,5,4)(6,7,8)$
$ 3, 3, 3 $ $1$ $3$ $(1,2,9)(3,4,5)(6,7,8)$
$ 3, 3, 3 $ $3$ $3$ $(1,3,6)(2,4,7)(5,8,9)$
$ 3, 3, 3 $ $3$ $3$ $(1,3,7)(2,4,8)(5,6,9)$
$ 3, 3, 3 $ $3$ $3$ $(1,3,8)(2,4,6)(5,7,9)$
$ 3, 3, 3 $ $3$ $3$ $(1,6,3)(2,7,4)(5,9,8)$
$ 3, 3, 3 $ $3$ $3$ $(1,6,5)(2,7,3)(4,9,8)$
$ 3, 3, 3 $ $3$ $3$ $(1,6,4)(2,7,5)(3,9,8)$
$ 3, 3, 3 $ $1$ $3$ $(1,9,2)(3,5,4)(6,8,7)$

magma: ConjugacyClasses(G);
 

Group invariants

Order:  $27=3^{3}$
magma: Order(G);
 
Cyclic:  no
magma: IsCyclic(G);
 
Abelian:  no
magma: IsAbelian(G);
 
Solvable:  yes
magma: IsSolvable(G);
 
Nilpotency class:  $2$
Label:  27.3
magma: IdentifyGroup(G);
 
Character table:

1A 3A1 3A-1 3B1 3B-1 3C1 3C-1 3D1 3D-1 3E1 3E-1
Size 1 1 1 3 3 3 3 3 3 3 3
3 P 1A 3A-1 3A1 3B-1 3D-1 3C-1 3D1 3C1 3E-1 3B1 3E1
Type
27.3.1a R 1 1 1 1 1 1 1 1 1 1 1
27.3.1b1 C 1 1 1 ζ31 ζ3 ζ3 ζ31 ζ31 ζ3 1 1
27.3.1b2 C 1 1 1 ζ3 ζ31 ζ31 ζ3 ζ3 ζ31 1 1
27.3.1c1 C 1 1 1 ζ31 ζ3 ζ31 ζ3 1 1 ζ31 ζ3
27.3.1c2 C 1 1 1 ζ3 ζ31 ζ3 ζ31 1 1 ζ3 ζ31
27.3.1d1 C 1 1 1 ζ31 ζ3 1 1 ζ3 ζ31 ζ3 ζ31
27.3.1d2 C 1 1 1 ζ3 ζ31 1 1 ζ31 ζ3 ζ31 ζ3
27.3.1e1 C 1 1 1 1 1 ζ31 ζ3 ζ31 ζ3 ζ3 ζ31
27.3.1e2 C 1 1 1 1 1 ζ3 ζ31 ζ3 ζ31 ζ31 ζ3
27.3.3a1 C 3 3ζ31 3ζ3 0 0 0 0 0 0 0 0
27.3.3a2 C 3 3ζ3 3ζ31 0 0 0 0 0 0 0 0

magma: CharacterTable(G);