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Magma
magma: G := TransitiveGroup(21, 16);
Group action invariants
Degree $n$: | $21$ | magma: t, n := TransitiveGroupIdentification(G); n;
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Transitive number $t$: | $16$ | magma: t, n := TransitiveGroupIdentification(G); t;
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Group: | $C_7:F_7$ | ||
Parity: | $-1$ | magma: IsEven(G);
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Primitive: | no | magma: IsPrimitive(G);
| magma: NilpotencyClass(G);
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$\card{\Aut(F/K)}$: | $1$ | magma: Order(Centralizer(SymmetricGroup(n), G));
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Generators: | (1,14,20,2,12,17)(3,10,21,7,9,16)(4,8,18,6,11,19)(5,13,15), (1,2)(3,7)(4,6)(8,12)(9,11)(13,14)(15,18)(16,17)(19,21) | magma: Generators(G);
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Low degree resolvents
|G/N| Galois groups for stem field(s) $2$: $C_2$ $3$: $C_3$ $6$: $C_6$ $14$: $D_{7}$ $42$: $F_7$, 21T3 Resolvents shown for degrees $\leq 47$
Subfields
Degree 3: $C_3$
Degree 7: None
Low degree siblings
21T16, 42T55 x 2Siblings are shown with degree $\leq 47$
A number field with this Galois group has no arithmetically equivalent fields.
Conjugacy classes
Cycle Type | Size | Order | Representative |
$ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 $ | $1$ | $1$ | $()$ |
$ 7, 7, 1, 1, 1, 1, 1, 1, 1 $ | $6$ | $7$ | $( 8, 9,10,11,12,13,14)(15,18,21,17,20,16,19)$ |
$ 7, 7, 1, 1, 1, 1, 1, 1, 1 $ | $6$ | $7$ | $( 8,10,12,14, 9,11,13)(15,21,20,19,18,17,16)$ |
$ 7, 7, 1, 1, 1, 1, 1, 1, 1 $ | $6$ | $7$ | $( 8,11,14,10,13, 9,12)(15,17,19,21,16,18,20)$ |
$ 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1 $ | $49$ | $2$ | $( 2, 7)( 3, 6)( 4, 5)( 9,14)(10,13)(11,12)(16,21)(17,20)(18,19)$ |
$ 7, 7, 7 $ | $6$ | $7$ | $( 1, 2, 3, 4, 5, 6, 7)( 8, 9,10,11,12,13,14)(15,16,17,18,19,20,21)$ |
$ 7, 7, 7 $ | $2$ | $7$ | $( 1, 2, 3, 4, 5, 6, 7)( 8,10,12,14, 9,11,13)(15,19,16,20,17,21,18)$ |
$ 7, 7, 7 $ | $6$ | $7$ | $( 1, 2, 3, 4, 5, 6, 7)( 8,12, 9,13,10,14,11)(15,18,21,17,20,16,19)$ |
$ 7, 7, 7 $ | $6$ | $7$ | $( 1, 2, 3, 4, 5, 6, 7)( 8,14,13,12,11,10, 9)(15,17,19,21,16,18,20)$ |
$ 7, 7, 7 $ | $6$ | $7$ | $( 1, 3, 5, 7, 2, 4, 6)( 8, 9,10,11,12,13,14)(15,21,20,19,18,17,16)$ |
$ 7, 7, 7 $ | $2$ | $7$ | $( 1, 3, 5, 7, 2, 4, 6)( 8,12, 9,13,10,14,11)(15,16,17,18,19,20,21)$ |
$ 7, 7, 7 $ | $2$ | $7$ | $( 1, 4, 7, 3, 6, 2, 5)( 8,14,13,12,11,10, 9)(15,20,18,16,21,19,17)$ |
$ 3, 3, 3, 3, 3, 3, 3 $ | $7$ | $3$ | $( 1, 8,15)( 2,10,19)( 3,12,16)( 4,14,20)( 5, 9,17)( 6,11,21)( 7,13,18)$ |
$ 21 $ | $14$ | $21$ | $( 1, 8,16, 6,11,15, 4,14,21, 2,10,20, 7,13,19, 5, 9,18, 3,12,17)$ |
$ 21 $ | $14$ | $21$ | $( 1, 8,17, 4,14,15, 7,13,20, 3,12,18, 6,11,16, 2,10,21, 5, 9,19)$ |
$ 21 $ | $14$ | $21$ | $( 1, 8,18, 2,10,15, 3,12,19, 4,14,16, 5, 9,20, 6,11,17, 7,13,21)$ |
$ 6, 6, 6, 3 $ | $49$ | $6$ | $( 1, 8,15)( 2,13,19, 7,10,18)( 3,11,16, 6,12,21)( 4, 9,20, 5,14,17)$ |
$ 6, 6, 6, 3 $ | $49$ | $6$ | $( 1,15, 8)( 2,18,10, 7,19,13)( 3,21,12, 6,16,11)( 4,17,14, 5,20, 9)$ |
$ 3, 3, 3, 3, 3, 3, 3 $ | $7$ | $3$ | $( 1,15, 8)( 2,19,10)( 3,16,12)( 4,20,14)( 5,17, 9)( 6,21,11)( 7,18,13)$ |
$ 21 $ | $14$ | $21$ | $( 1,15,11, 7,18, 9, 6,21,14, 5,17,12, 4,20,10, 3,16, 8, 2,19,13)$ |
$ 21 $ | $14$ | $21$ | $( 1,15,14, 6,21,10, 4,20,13, 2,19, 9, 7,18,12, 5,17, 8, 3,16,11)$ |
$ 21 $ | $14$ | $21$ | $( 1,15,10, 5,17,11, 2,19,12, 6,21,13, 3,16,14, 7,18, 8, 4,20, 9)$ |
magma: ConjugacyClasses(G);
Group invariants
Order: | $294=2 \cdot 3 \cdot 7^{2}$ | magma: Order(G);
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Cyclic: | no | magma: IsCyclic(G);
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Abelian: | no | magma: IsAbelian(G);
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Solvable: | yes | magma: IsSolvable(G);
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Nilpotency class: | not nilpotent | ||
Label: | 294.10 | magma: IdentifyGroup(G);
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Character table: not available. |
magma: CharacterTable(G);