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Magma
magma: G := TransitiveGroup(21, 38);
Group action invariants
Degree $n$: | $21$ | magma: t, n := TransitiveGroupIdentification(G); n;
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Transitive number $t$: | $38$ | magma: t, n := TransitiveGroupIdentification(G); t;
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Group: | $S_7$ | ||
Parity: | $-1$ | magma: IsEven(G);
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Primitive: | yes | 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: | (1,7,12,16,19,21,6)(2,8,13,17,20,5,11)(3,9,14,18,4,10,15), (2,3)(4,5,6)(7,8)(9,10,11)(13,17,15,16,14,18)(19,21,20) | magma: Generators(G);
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Low degree resolvents
|G/N| Galois groups for stem field(s) $2$: $C_2$ Resolvents shown for degrees $\leq 47$
Subfields
Degree 3: None
Degree 7: None
Low degree siblings
7T7, 14T46, 30T565, 35T31, 42T411, 42T412, 42T413, 42T418Siblings 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 $ | $21$ | $2$ | $( 2, 6)( 7,11)(12,18)(13,20)(14,21)$ | |
$ 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1 $ | $70$ | $3$ | $( 1,10, 8)( 2,14,12)( 3, 5,17)( 4,19,16)( 6,21,18)$ | |
$ 6, 3, 3, 3, 2, 2, 1, 1 $ | $420$ | $6$ | $( 1, 8,10)( 2,18,14, 6,12,21)( 3,17, 5)( 4,16,19)( 7,11)(13,20)$ | |
$ 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 $ | $105$ | $2$ | $( 1,16)( 2,12)( 4, 8)( 5,17)( 6,18)( 7,13)(10,19)(11,20)$ | |
$ 4, 4, 4, 4, 2, 1, 1, 1 $ | $210$ | $4$ | $( 1, 8,16, 4)( 2, 7,12,13)( 3, 9)( 5,10,17,19)( 6,11,18,20)$ | |
$ 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1 $ | $105$ | $2$ | $( 1,16)( 2,12)( 4, 8)( 5,18)( 6,17)( 7,13)(10,20)(11,19)(14,15)$ | |
$ 3, 3, 3, 3, 3, 3, 3 $ | $280$ | $3$ | $( 1,11, 6)( 2, 7,15)( 3, 9,21)( 4,10,18)( 5, 8,20)(12,13,14)(16,19,17)$ | |
$ 6, 6, 3, 2, 2, 1, 1 $ | $210$ | $6$ | $( 1,14, 8, 2,10,12)( 3, 5,17)( 4,21,16, 6,19,18)( 9,15)(11,13)$ | |
$ 12, 4, 3, 2 $ | $420$ | $12$ | $( 1,16,14, 6, 8,19, 2,18,10, 4,12,21)( 3,17, 5)( 7,20)( 9,13,15,11)$ | |
$ 5, 5, 5, 5, 1 $ | $504$ | $5$ | $( 1, 3,16,19,10)( 2,12,13,14, 7)( 4,17, 9, 5, 8)( 6,18,20,21,11)$ | |
$ 10, 5, 5, 1 $ | $504$ | $10$ | $( 1,19, 3,10,16)( 2,21,12,11,13, 6,14,18, 7,20)( 4, 5,17, 8, 9)$ | |
$ 6, 6, 6, 3 $ | $840$ | $6$ | $( 1, 4, 2, 6, 5, 3)( 7,20,14,18,10,16)( 8, 9,13,15,21,17)(11,19,12)$ | |
$ 4, 4, 4, 4, 2, 2, 1 $ | $630$ | $4$ | $( 1, 8,16, 4)( 2, 7,12,13)( 3, 9)( 5,11,17,20)( 6,10,18,19)(14,15)$ | |
$ 7, 7, 7 $ | $720$ | $7$ | $( 1,12, 4,18,19,11,14)( 2, 3,16,20,21,10, 7)( 5, 8,13, 6,17, 9,15)$ |
magma: ConjugacyClasses(G);
Group invariants
Order: | $5040=2^{4} \cdot 3^{2} \cdot 5 \cdot 7$ | 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: | no | magma: IsSolvable(G);
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Nilpotency class: | not nilpotent | ||
Label: | 5040.w | magma: IdentifyGroup(G);
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Character table: |
Size | |
2 P | |
3 P | |
5 P | |
7 P | |
Type |
magma: CharacterTable(G);