Show commands:
Magma
magma: G := TransitiveGroup(21, 25);
Group action invariants
Degree $n$: | $21$ | magma: t, n := TransitiveGroupIdentification(G); n;
| |
Transitive number $t$: | $25$ | magma: t, n := TransitiveGroupIdentification(G); t;
| |
Group: | $C_7^2:(C_3\times S_3)$ | ||
Parity: | $1$ | magma: IsEven(G);
| |
Primitive: | no | magma: IsPrimitive(G);
| magma: NilpotencyClass(G);
|
$\card{\Aut(F/K)}$: | $1$ | magma: Order(Centralizer(SymmetricGroup(n), G));
| |
Generators: | (2,6,5,7,3,4)(8,20,9,15,13,16)(10,17)(11,19,14,18,12,21), (1,21,14)(2,16,10)(3,18,13)(4,20,9)(5,15,12)(6,17,8)(7,19,11) | magma: Generators(G);
|
Low degree resolvents
|G/N| Galois groups for stem field(s) $2$: $C_2$ $3$: $C_3$ $6$: $S_3$, $C_6$ $18$: $S_3\times C_3$ Resolvents shown for degrees $\leq 47$
Subfields
Degree 3: $S_3$
Degree 7: None
Low degree siblings
14T26, 21T26, 42T143, 42T144, 42T152, 42T153, 42T154, 42T155Siblings are shown with degree $\leq 47$
A number field with this Galois group has no arithmetically equivalent fields.
Conjugacy classes
Label | Cycle Type | Size | Order | Representative |
$1^{21}$ | $1$ | $1$ | $()$ | |
$7^{3}$ | $6$ | $7$ | $( 1, 6, 4, 2, 7, 5, 3)( 8,12, 9,13,10,14,11)(15,21,20,19,18,17,16)$ | |
$7^{3}$ | $6$ | $7$ | $( 1, 2, 3, 4, 5, 6, 7)( 8,13,11, 9,14,12,10)(15,19,16,20,17,21,18)$ | |
$7^{2},1^{7}$ | $9$ | $7$ | $( 8,14,13,12,11,10, 9)(15,21,20,19,18,17,16)$ | |
$7^{3}$ | $18$ | $7$ | $( 1, 6, 4, 2, 7, 5, 3)( 8,11,14,10,13, 9,12)(15,20,18,16,21,19,17)$ | |
$7^{2},1^{7}$ | $9$ | $7$ | $( 8,12, 9,13,10,14,11)(15,19,16,20,17,21,18)$ | |
$3^{6},1^{3}$ | $49$ | $3$ | $( 2, 5, 3)( 4, 6, 7)( 9,12,10)(11,13,14)(16,19,17)(18,20,21)$ | |
$3^{6},1^{3}$ | $49$ | $3$ | $( 2, 3, 5)( 4, 7, 6)( 9,10,12)(11,14,13)(16,17,19)(18,21,20)$ | |
$3^{7}$ | $98$ | $3$ | $( 1,11,18)( 2,10,19)( 3, 9,20)( 4, 8,21)( 5,14,15)( 6,13,16)( 7,12,17)$ | |
$21$ | $42$ | $21$ | $( 1,13,19, 5,11,20, 2, 9,21, 6,14,15, 3,12,16, 7,10,17, 4, 8,18)$ | |
$21$ | $42$ | $21$ | $( 1,10,21, 6,11,17, 4,12,20, 2,13,16, 7,14,19, 5, 8,15, 3, 9,18)$ | |
$3^{7}$ | $14$ | $3$ | $( 1,11,18)( 2,14,20)( 3,10,15)( 4,13,17)( 5, 9,19)( 6,12,21)( 7, 8,16)$ | |
$21$ | $42$ | $21$ | $( 1,14,15, 2,12,19, 3,10,16, 4, 8,20, 5,13,17, 6,11,21, 7, 9,18)$ | |
$21$ | $42$ | $21$ | $( 1, 8,18, 4, 9,16, 7,10,21, 3,11,19, 6,12,17, 2,13,15, 5,14,20)$ | |
$3^{7}$ | $14$ | $3$ | $( 1,10,17)( 2, 8,21)( 3,13,18)( 4,11,15)( 5, 9,19)( 6,14,16)( 7,12,20)$ | |
$6^{3},2,1$ | $147$ | $6$ | $( 2, 6, 5, 7, 3, 4)( 8,20, 9,15,13,16)(10,17)(11,19,14,18,12,21)$ | |
$14,2^{3},1$ | $63$ | $14$ | $( 2, 7)( 3, 6)( 4, 5)( 8,21,13,19,11,17, 9,15,14,20,12,18,10,16)$ | |
$14,2^{3},1$ | $63$ | $14$ | $( 1, 6)( 2, 5)( 3, 4)( 8,20, 9,21,10,15,11,16,12,17,13,18,14,19)$ | |
$2^{10},1$ | $21$ | $2$ | $( 1, 2)( 3, 7)( 4, 6)( 8,18)( 9,19)(10,20)(11,21)(12,15)(13,16)(14,17)$ | |
$6^{3},2,1$ | $147$ | $6$ | $( 2, 4, 3, 7, 5, 6)( 8,18, 9,15,11,16)(10,19,13,17,12,20)(14,21)$ |
magma: ConjugacyClasses(G);
Group invariants
Order: | $882=2 \cdot 3^{2} \cdot 7^{2}$ | magma: Order(G);
| |
Cyclic: | no | magma: IsCyclic(G);
| |
Abelian: | no | magma: IsAbelian(G);
| |
Solvable: | yes | magma: IsSolvable(G);
| |
Nilpotency class: | not nilpotent | ||
Label: | 882.34 | magma: IdentifyGroup(G);
| |
Character table: |
1A | 2A | 3A1 | 3A-1 | 3B1 | 3B-1 | 3C | 6A1 | 6A-1 | 7A1 | 7A-1 | 7B1 | 7B-1 | 7C | 14A1 | 14A-1 | 21A1 | 21A-1 | 21A2 | 21A-2 | ||
Size | 1 | 21 | 14 | 14 | 49 | 49 | 98 | 147 | 147 | 6 | 6 | 9 | 9 | 18 | 63 | 63 | 42 | 42 | 42 | 42 | |
2 P | 1A | 1A | 3A-1 | 3A1 | 3B-1 | 3B1 | 3C | 3B1 | 3B-1 | 7A1 | 7A-1 | 7B1 | 7B-1 | 7C | 7B1 | 7B-1 | 21A2 | 21A-2 | 21A1 | 21A-1 | |
3 P | 1A | 2A | 1A | 1A | 1A | 1A | 1A | 2A | 2A | 7A-1 | 7A1 | 7B-1 | 7B1 | 7C | 14A-1 | 14A1 | 7A1 | 7A-1 | 7A1 | 7A-1 | |
7 P | 1A | 2A | 3A1 | 3A-1 | 3B1 | 3B-1 | 3C | 6A1 | 6A-1 | 1A | 1A | 1A | 1A | 1A | 2A | 2A | 3A1 | 3A-1 | 3A-1 | 3A1 | |
Type | |||||||||||||||||||||
882.34.1a | R | ||||||||||||||||||||
882.34.1b | R | ||||||||||||||||||||
882.34.1c1 | C | ||||||||||||||||||||
882.34.1c2 | C | ||||||||||||||||||||
882.34.1d1 | C | ||||||||||||||||||||
882.34.1d2 | C | ||||||||||||||||||||
882.34.2a | R | ||||||||||||||||||||
882.34.2b1 | C | ||||||||||||||||||||
882.34.2b2 | C | ||||||||||||||||||||
882.34.6a1 | C | ||||||||||||||||||||
882.34.6a2 | C | ||||||||||||||||||||
882.34.6b1 | C | ||||||||||||||||||||
882.34.6b2 | C | ||||||||||||||||||||
882.34.6b3 | C | ||||||||||||||||||||
882.34.6b4 | C | ||||||||||||||||||||
882.34.9a1 | C | ||||||||||||||||||||
882.34.9a2 | C | ||||||||||||||||||||
882.34.9b1 | C | ||||||||||||||||||||
882.34.9b2 | C | ||||||||||||||||||||
882.34.18a | R |
magma: CharacterTable(G);