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Properties

Label 30T28
Degree $30$
Order $120$
Cyclic no
Abelian no
Solvable yes
Primitive no
$p$-group no
Group: $D_5\times A_4$

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Show commands: Magma

magma: G := TransitiveGroup(30, 28);
 

Group action invariants

Degree $n$:  $30$
magma: t, n := TransitiveGroupIdentification(G); n;
 
Transitive number $t$:  $28$
magma: t, n := TransitiveGroupIdentification(G); t;
 
Group:  $D_5\times A_4$
Parity:  $1$
magma: IsEven(G);
 
Primitive:  no
magma: IsPrimitive(G);
 
magma: NilpotencyClass(G);
 
$\card{\Aut(F/K)}$:  $2$
magma: Order(Centralizer(SymmetricGroup(n), G));
 
Generators:  (1,13,27)(2,14,28)(3,11,30,9,15,25)(4,12,29,10,16,26)(5,19,21,7,17,24)(6,20,22,8,18,23), (1,6,9,4,7,2,5,10,3,8)(11,16,19,14,17,12,15,20,13,18)(21,25,30,24,27)(22,26,29,23,28)
magma: Generators(G);
 

Low degree resolvents

|G/N|Galois groups for stem field(s)
$2$:  $C_2$
$3$:  $C_3$
$6$:  $C_6$
$10$:  $D_{5}$
$12$:  $A_4$
$24$:  $A_4\times C_2$
$30$:  $D_5\times C_3$

Resolvents shown for degrees $\leq 47$

Subfields

Degree 2: None

Degree 3: $C_3$

Degree 5: $D_{5}$

Degree 6: $A_4$

Degree 10: None

Degree 15: $D_5\times C_3$

Low degree siblings

20T37, 30T20, 40T65

Siblings are shown with degree $\leq 47$

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

Conjugacy classes

Cycle TypeSizeOrderRepresentative
$ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 $ $1$ $1$ $()$
$ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 $ $3$ $2$ $(11,12)(13,14)(15,16)(17,18)(19,20)(21,22)(23,24)(25,26)(27,28)(29,30)$
$ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1 $ $5$ $2$ $( 3, 9)( 4,10)( 5, 7)( 6, 8)(11,15)(12,16)(17,19)(18,20)(21,24)(22,23)(25,30) (26,29)$
$ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1 $ $15$ $2$ $( 3, 9)( 4,10)( 5, 7)( 6, 8)(11,16)(12,15)(13,14)(17,20)(18,19)(21,23)(22,24) (25,29)(26,30)(27,28)$
$ 5, 5, 5, 5, 5, 5 $ $2$ $5$ $( 1, 3, 5, 7, 9)( 2, 4, 6, 8,10)(11,13,15,17,19)(12,14,16,18,20) (21,24,25,27,30)(22,23,26,28,29)$
$ 10, 10, 5, 5 $ $6$ $10$ $( 1, 3, 5, 7, 9)( 2, 4, 6, 8,10)(11,14,15,18,19,12,13,16,17,20) (21,23,25,28,30,22,24,26,27,29)$
$ 5, 5, 5, 5, 5, 5 $ $2$ $5$ $( 1, 5, 9, 3, 7)( 2, 6,10, 4, 8)(11,15,19,13,17)(12,16,20,14,18) (21,25,30,24,27)(22,26,29,23,28)$
$ 10, 10, 5, 5 $ $6$ $10$ $( 1, 5, 9, 3, 7)( 2, 6,10, 4, 8)(11,16,19,14,17,12,15,20,13,18) (21,26,30,23,27,22,25,29,24,28)$
$ 15, 15 $ $8$ $15$ $( 1,11,23, 5,15,28, 9,19,22, 3,13,26, 7,17,29)( 2,12,24, 6,16,27,10,20,21, 4, 14,25, 8,18,30)$
$ 6, 6, 6, 6, 3, 3 $ $20$ $6$ $( 1,11,27, 9,13,25)( 2,12,28,10,14,26)( 3,19,30, 7,15,24)( 4,20,29, 8,16,23) ( 5,17,21)( 6,18,22)$
$ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 $ $4$ $3$ $( 1,13,27)( 2,14,28)( 3,15,30)( 4,16,29)( 5,17,21)( 6,18,22)( 7,19,24) ( 8,20,23)( 9,11,25)(10,12,26)$
$ 15, 15 $ $8$ $15$ $( 1,17,26, 3,19,28, 5,11,29, 7,13,22, 9,15,23)( 2,18,25, 4,20,27, 6,12,30, 8, 14,21,10,16,24)$
$ 15, 15 $ $8$ $15$ $( 1,21,11, 3,24,13, 5,25,15, 7,27,17, 9,30,19)( 2,22,12, 4,23,14, 6,26,16, 8, 28,18,10,29,20)$
$ 6, 6, 6, 6, 3, 3 $ $20$ $6$ $( 1,21,13, 5,27,17)( 2,22,14, 6,28,18)( 3,30,15)( 4,29,16)( 7,25,19, 9,24,11) ( 8,26,20,10,23,12)$
$ 15, 15 $ $8$ $15$ $( 1,25,19, 5,30,13, 9,24,17, 3,27,11, 7,21,15)( 2,26,20, 6,29,14,10,23,18, 4, 28,12, 8,22,16)$
$ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 $ $4$ $3$ $( 1,27,13)( 2,28,14)( 3,30,15)( 4,29,16)( 5,21,17)( 6,22,18)( 7,24,19) ( 8,23,20)( 9,25,11)(10,26,12)$

magma: ConjugacyClasses(G);
 

Group invariants

Order:  $120=2^{3} \cdot 3 \cdot 5$
magma: Order(G);
 
Cyclic:  no
magma: IsCyclic(G);
 
Abelian:  no
magma: IsAbelian(G);
 
Solvable:  yes
magma: IsSolvable(G);
 
Nilpotency class:   not nilpotent
Label:  120.39
magma: IdentifyGroup(G);
 
Character table:    
      2  3  3  3  3  2   2  2   2   .   1  1   .   .   1   .  1
      3  1  .  1  .  1   .  1   .   1   1  1   1   1   1   1  1
      5  1  1  .  .  1   1  1   1   1   .  1   1   1   .   1  1

        1a 2a 2b 2c 5a 10a 5b 10b 15a  6a 3a 15b 15c  6b 15d 3b
     2P 1a 1a 1a 1a 5b  5b 5a  5a 15c  3b 3b 15d 15a  3a 15b 3a
     3P 1a 2a 2b 2c 5b 10b 5a 10a  5b  2b 1a  5a  5a  2b  5b 1a
     5P 1a 2a 2b 2c 1a  2a 1a  2a  3b  6b 3b  3b  3a  6a  3a 3a
     7P 1a 2a 2b 2c 5b 10b 5a 10a 15b  6a 3a 15a 15d  6b 15c 3b
    11P 1a 2a 2b 2c 5a 10a 5b 10b 15d  6b 3b 15c 15b  6a 15a 3a
    13P 1a 2a 2b 2c 5b 10b 5a 10a 15b  6a 3a 15a 15d  6b 15c 3b

X.1      1  1  1  1  1   1  1   1   1   1  1   1   1   1   1  1
X.2      1  1 -1 -1  1   1  1   1   1  -1  1   1   1  -1   1  1
X.3      1  1 -1 -1  1   1  1   1   C  -C  C   C  /C -/C  /C /C
X.4      1  1 -1 -1  1   1  1   1  /C -/C /C  /C   C  -C   C  C
X.5      1  1  1  1  1   1  1   1   C   C  C   C  /C  /C  /C /C
X.6      1  1  1  1  1   1  1   1  /C  /C /C  /C   C   C   C  C
X.7      2  2  .  .  A   A *A  *A   A   .  2  *A  *A   .   A  2
X.8      2  2  .  . *A  *A  A   A  *A   .  2   A   A   .  *A  2
X.9      2  2  .  .  A   A *A  *A   D   .  F   E  /E   .  /D /F
X.10     2  2  .  .  A   A *A  *A  /D   . /F  /E   E   .   D  F
X.11     2  2  .  . *A  *A  A   A   E   .  F   D  /D   .  /E /F
X.12     2  2  .  . *A  *A  A   A  /E   . /F  /D   D   .   E  F
X.13     3 -1 -3  1  3  -1  3  -1   .   .  .   .   .   .   .  .
X.14     3 -1  3 -1  3  -1  3  -1   .   .  .   .   .   .   .  .
X.15     6 -2  .  .  B  -A *B -*A   .   .  .   .   .   .   .  .
X.16     6 -2  .  . *B -*A  B  -A   .   .  .   .   .   .   .  .

A = E(5)+E(5)^4
  = (-1+Sqrt(5))/2 = b5
B = 3*E(5)+3*E(5)^4
  = (-3+3*Sqrt(5))/2 = 3b5
C = E(3)^2
  = (-1-Sqrt(-3))/2 = -1-b3
D = E(15)^7+E(15)^13
E = E(15)+E(15)^4
F = 2*E(3)^2
  = -1-Sqrt(-3) = -1-i3

magma: CharacterTable(G);