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Magma
magma: G := TransitiveGroup(20, 73);
Group action invariants
Degree $n$: | $20$ | magma: t, n := TransitiveGroupIdentification(G); n;
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Transitive number $t$: | $73$ | magma: t, n := TransitiveGroupIdentification(G); t;
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Group: | $C_2\wr D_5$ | ||
Parity: | $1$ | magma: IsEven(G);
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Primitive: | no | magma: IsPrimitive(G);
| magma: NilpotencyClass(G);
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$\card{\Aut(F/K)}$: | $4$ | magma: Order(Centralizer(SymmetricGroup(n), G));
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Generators: | (1,6)(2,5)(3,4)(7,19,18,10)(8,20,17,9)(11,16)(12,15)(13,14), (1,14,12,3)(2,13,11,4)(5,9,16,20)(6,10,15,19) | magma: Generators(G);
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Low degree resolvents
|G/N| Galois groups for stem field(s) $2$: $C_2$ x 3 $4$: $C_2^2$ $10$: $D_{5}$ $20$: $D_{10}$ $160$: $(C_2^4 : C_5) : C_2$ Resolvents shown for degrees $\leq 47$
Subfields
Degree 2: $C_2$
Degree 4: None
Degree 5: $D_{5}$
Degree 10: $D_{10}$, $(C_2^4 : C_5) : C_2$, $C_2\times (C_2^4 : D_5)$
Low degree siblings
10T23 x 6, 20T71 x 6, 20T73 x 5, 20T76 x 6, 20T81 x 3, 20T85 x 6, 20T87 x 6, 32T9313 x 2, 40T204 x 3, 40T270 x 12, 40T271 x 12, 40T272 x 3, 40T273 x 2, 40T284 x 6, 40T286 x 6, 40T288 x 3, 40T293 x 3, 40T295 x 6Siblings 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 |
$1^{20}$ | $1$ | $1$ | $()$ | |
$2^{4},1^{12}$ | $5$ | $2$ | $( 7,18)( 8,17)( 9,20)(10,19)$ | |
$2^{4},1^{12}$ | $5$ | $2$ | $( 5,16)( 6,15)( 9,20)(10,19)$ | |
$2^{8},1^{4}$ | $20$ | $2$ | $( 3, 9)( 4,10)( 5, 7)( 6, 8)(13,19)(14,20)(15,17)(16,18)$ | |
$4^{4},1^{4}$ | $20$ | $4$ | $( 3, 9,14,20)( 4,10,13,19)( 5, 7,16,18)( 6, 8,15,17)$ | |
$2^{8},1^{4}$ | $5$ | $2$ | $( 3,14)( 4,13)( 5,16)( 6,15)( 7,18)( 8,17)( 9,20)(10,19)$ | |
$2^{10}$ | $5$ | $2$ | $( 1, 2)( 3, 4)( 5, 6)( 7, 8)( 9,19)(10,20)(11,12)(13,14)(15,16)(17,18)$ | |
$2^{10}$ | $5$ | $2$ | $( 1, 2)( 3, 4)( 5,15)( 6,16)( 7,17)( 8,18)( 9,19)(10,20)(11,12)(13,14)$ | |
$4^{2},2^{6}$ | $20$ | $4$ | $( 1, 2)( 3,10,14,19)( 4, 9,13,20)( 5, 8)( 6, 7)(11,12)(15,18)(16,17)$ | |
$4^{2},2^{6}$ | $20$ | $4$ | $( 1, 2)( 3,10)( 4, 9)( 5, 8,16,17)( 6, 7,15,18)(11,12)(13,20)(14,19)$ | |
$2^{10}$ | $5$ | $2$ | $( 1, 2)( 3,13)( 4,14)( 5, 6)( 7,17)( 8,18)( 9,19)(10,20)(11,12)(15,16)$ | |
$4^{2},2^{6}$ | $20$ | $4$ | $( 1, 3)( 2, 4)( 5, 9,16,20)( 6,10,15,19)( 7,18)( 8,17)(11,13)(12,14)$ | |
$5^{4}$ | $32$ | $5$ | $( 1, 3, 5, 7, 9)( 2, 4, 6, 8,10)(11,13,15,17,19)(12,14,16,18,20)$ | |
$4^{2},2^{6}$ | $20$ | $4$ | $( 1, 3,12,14)( 2, 4,11,13)( 5, 9)( 6,10)( 7,18)( 8,17)(15,19)(16,20)$ | |
$2^{10}$ | $20$ | $2$ | $( 1, 4)( 2, 3)( 5,10)( 6, 9)( 7,17)( 8,18)(11,14)(12,13)(15,20)(16,19)$ | |
$10^{2}$ | $32$ | $10$ | $( 1, 4, 5, 8, 9,11,14,15,18,19)( 2, 3, 6, 7,10,12,13,16,17,20)$ | |
$4^{4},2^{2}$ | $20$ | $4$ | $( 1, 4,12,13)( 2, 3,11,14)( 5,10,16,19)( 6, 9,15,20)( 7,17)( 8,18)$ | |
$5^{4}$ | $32$ | $5$ | $( 1, 5, 9, 3, 7)( 2, 6,10, 4, 8)(11,15,19,13,17)(12,16,20,14,18)$ | |
$10^{2}$ | $32$ | $10$ | $( 1, 6, 9,13,18,11,16,19, 3, 8)( 2, 5,10,14,17,12,15,20, 4, 7)$ | |
$2^{10}$ | $1$ | $2$ | $( 1,11)( 2,12)( 3,13)( 4,14)( 5,15)( 6,16)( 7,17)( 8,18)( 9,19)(10,20)$ |
magma: ConjugacyClasses(G);
Group invariants
Order: | $320=2^{6} \cdot 5$ | 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: | not nilpotent | ||
Label: | 320.1636 | magma: IdentifyGroup(G);
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Character table: |
1A | 2A | 2B | 2C | 2D | 2E | 2F | 2G | 2H | 2I | 4A | 4B | 4C | 4D | 4E | 4F | 5A1 | 5A2 | 10A1 | 10A3 | ||
Size | 1 | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 32 | 32 | 32 | 32 | |
2 P | 1A | 1A | 1A | 1A | 1A | 1A | 1A | 1A | 1A | 1A | 2B | 2B | 2C | 2D | 2D | 2C | 5A2 | 5A1 | 5A1 | 5A2 | |
5 P | 1A | 2A | 2F | 2C | 2D | 2B | 2E | 2G | 2H | 2I | 4A | 4B | 4C | 4D | 4E | 4F | 1A | 1A | 2A | 2A | |
Type | |||||||||||||||||||||
320.1636.1a | R | ||||||||||||||||||||
320.1636.1b | R | ||||||||||||||||||||
320.1636.1c | R | ||||||||||||||||||||
320.1636.1d | R | ||||||||||||||||||||
320.1636.2a1 | R | ||||||||||||||||||||
320.1636.2a2 | R | ||||||||||||||||||||
320.1636.2b1 | R | ||||||||||||||||||||
320.1636.2b2 | R | ||||||||||||||||||||
320.1636.5a | R | ||||||||||||||||||||
320.1636.5b | R | ||||||||||||||||||||
320.1636.5c | R | ||||||||||||||||||||
320.1636.5d | R | ||||||||||||||||||||
320.1636.5e | R | ||||||||||||||||||||
320.1636.5f | R | ||||||||||||||||||||
320.1636.5g | R | ||||||||||||||||||||
320.1636.5h | R | ||||||||||||||||||||
320.1636.5i | R | ||||||||||||||||||||
320.1636.5j | R | ||||||||||||||||||||
320.1636.5k | R | ||||||||||||||||||||
320.1636.5l | R |
magma: CharacterTable(G);