Show commands:
Magma
magma: G := TransitiveGroup(8, 20);
Group action invariants
Degree $n$: | $8$ | magma: t, n := TransitiveGroupIdentification(G); n;
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Transitive number $t$: | $20$ | magma: t, n := TransitiveGroupIdentification(G); t;
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Group: | $C_2^3: C_4$ | ||
CHM label: | $[2^{3}]4$ | ||
Parity: | $1$ | magma: IsEven(G);
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Primitive: | no | magma: IsPrimitive(G);
| magma: NilpotencyClass(G);
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$\card{\Aut(F/K)}$: | $2$ | magma: Order(Centralizer(SymmetricGroup(n), G));
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Generators: | (1,2,3,8)(4,5,6,7), (2,6)(3,7) | magma: Generators(G);
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Low degree resolvents
|G/N| Galois groups for stem field(s) $2$: $C_2$ x 3 $4$: $C_4$ x 2, $C_2^2$ $8$: $D_{4}$ x 2, $C_4\times C_2$ $16$: $C_2^2:C_4$ Resolvents shown for degrees $\leq 47$
Subfields
Degree 2: $C_2$
Degree 4: $C_4$
Low degree siblings
8T19 x 2, 8T21, 16T33 x 2, 16T52, 16T53, 32T19Siblings 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 $ | $1$ | $1$ | $()$ | |
$ 2, 2, 1, 1, 1, 1 $ | $4$ | $2$ | $(3,7)(4,8)$ | |
$ 2, 2, 1, 1, 1, 1 $ | $2$ | $2$ | $(2,6)(4,8)$ | |
$ 4, 4 $ | $4$ | $4$ | $(1,2,3,4)(5,6,7,8)$ | |
$ 4, 4 $ | $4$ | $4$ | $(1,2,3,8)(4,5,6,7)$ | |
$ 2, 2, 2, 2 $ | $2$ | $2$ | $(1,3)(2,4)(5,7)(6,8)$ | |
$ 4, 4 $ | $4$ | $4$ | $(1,3,5,7)(2,4,6,8)$ | |
$ 2, 2, 2, 2 $ | $2$ | $2$ | $(1,3)(2,8)(4,6)(5,7)$ | |
$ 4, 4 $ | $4$ | $4$ | $(1,4,3,2)(5,8,7,6)$ | |
$ 4, 4 $ | $4$ | $4$ | $(1,4,7,2)(3,6,5,8)$ | |
$ 2, 2, 2, 2 $ | $1$ | $2$ | $(1,5)(2,6)(3,7)(4,8)$ |
magma: ConjugacyClasses(G);
Group invariants
Order: | $32=2^{5}$ | 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: | $3$ | ||
Label: | 32.6 | magma: IdentifyGroup(G);
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Character table: |
1A | 2A | 2B | 2C | 2D | 2E | 4A | 4B1 | 4B-1 | 4C1 | 4C-1 | ||
Size | 1 | 1 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | |
2 P | 1A | 1A | 1A | 1A | 1A | 1A | 2C | 2D | 2A | 2C | 2D | |
Type | ||||||||||||
32.6.1a | R | |||||||||||
32.6.1b | R | |||||||||||
32.6.1c | R | |||||||||||
32.6.1d | R | |||||||||||
32.6.1e1 | C | |||||||||||
32.6.1e2 | C | |||||||||||
32.6.1f1 | C | |||||||||||
32.6.1f2 | C | |||||||||||
32.6.2a | R | |||||||||||
32.6.2b | R | |||||||||||
32.6.4a | R |
magma: CharacterTable(G);