Properties

Label 2688.ci
Order \( 2^{7} \cdot 3 \cdot 7 \)
Exponent \( 2^{3} \cdot 3 \cdot 7 \)
Nilpotent no
Solvable no
$\card{G^{\mathrm{ab}}}$ \( 1 \)
$\card{Z(G)}$ \( 2 \)
$\card{\Aut(G)}$ \( 2^{6} \cdot 3 \cdot 7 \)
$\card{\mathrm{Out}(G)}$ \( 1 \)
Perm deg. $16$
Trans deg. $16$
Rank $2$

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Show commands: Gap / Magma / Oscar / SageMath

Copy content comment:Construction of abstract group
 
Copy content magma:G := PermutationGroup< 16 | (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) >;
 
Copy content gap:G := Group( (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) );
 
Copy content sage:G = PermutationGroup(['(1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12)', '(1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8)'])
 
Copy content sage_gap:G = gap.new('Group( (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) )')
 
Copy content oscar:G = @permutation_group(16, (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8))
 

Group information

Description:$C_2^4:\PSL(2,7)$
Order: \(2688\)\(\medspace = 2^{7} \cdot 3 \cdot 7 \)
Copy content comment:Order of the group
 
Copy content magma:Order(G);
 
Copy content gap:Order(G);
 
Copy content sage:G.order()
 
Copy content sage_gap:G.Order()
 
Copy content oscar:order(G)
 
Exponent: \(168\)\(\medspace = 2^{3} \cdot 3 \cdot 7 \)
Copy content comment:Exponent of the group
 
Copy content magma:Exponent(G);
 
Copy content gap:Exponent(G);
 
Copy content sage:G.exponent()
 
Copy content sage_gap:G.Exponent()
 
Copy content oscar:exponent(G)
 
Automorphism group:$C_2^3:\GL(3,2)$, of order \(1344\)\(\medspace = 2^{6} \cdot 3 \cdot 7 \)
Copy content comment:Automorphism group
 
Copy content gap:AutomorphismGroup(G);
 
Copy content magma:AutomorphismGroup(G);
 
Copy content sage:libgap(G).AutomorphismGroup()
 
Copy content sage_gap:G.AutomorphismGroup()
 
Copy content oscar:automorphism_group(G)
 
Composition factors:$C_2$ x 4, $\PSL(2,7)$
Copy content comment:Composition factors of the group
 
Copy content magma:CompositionFactors(G);
 
Copy content gap:CompositionSeries(G);
 
Copy content sage:G.composition_series()
 
Copy content sage_gap:G.CompositionSeries()
 
Copy content oscar:composition_series(G)
 
Derived length:$0$
Copy content comment:Derived length of the group
 
Copy content magma:DerivedLength(G);
 
Copy content gap:DerivedLength(G);
 
Copy content sage:libgap(G).DerivedLength()
 
Copy content sage_gap:G.DerivedLength()
 
Copy content oscar:derived_length(G)
 

This group is nonabelian and perfect (hence nonsolvable).

Copy content comment:Determine if the group G is abelian
 
Copy content magma:IsAbelian(G);
 
Copy content gap:IsAbelian(G);
 
Copy content sage:G.is_abelian()
 
Copy content sage_gap:G.IsAbelian()
 
Copy content oscar:is_abelian(G)
 
Copy content comment:Determine if the group G is cyclic
 
Copy content magma:IsCyclic(G);
 
Copy content gap:IsCyclic(G);
 
Copy content sage:G.is_cyclic()
 
Copy content sage_gap:G.IsCyclic()
 
Copy content oscar:is_cyclic(G)
 
Copy content comment:Determine if the group G is nilpotent
 
Copy content magma:IsNilpotent(G);
 
Copy content gap:IsNilpotentGroup(G);
 
Copy content sage:G.is_nilpotent()
 
Copy content sage_gap:G.IsNilpotentGroup()
 
Copy content oscar:is_nilpotent(G)
 
Copy content comment:Determine if the group G is solvable
 
Copy content magma:IsSolvable(G);
 
Copy content gap:IsSolvableGroup(G);
 
Copy content sage:G.is_solvable()
 
Copy content sage_gap:G.IsSolvableGroup()
 
Copy content oscar:is_solvable(G)
 
Copy content comment:Determine if the group G is supersolvable
 
Copy content gap:IsSupersolvableGroup(G);
 
Copy content sage:G.is_supersolvable()
 
Copy content sage_gap:G.IsSupersolvableGroup()
 
Copy content oscar:is_supersolvable(G)
 
Copy content comment:Determine if the group G is simple
 
Copy content magma:IsSimple(G);
 
Copy content gap:IsSimpleGroup(G);
 
Copy content sage:G.is_simple()
 
Copy content sage_gap:G.IsSimpleGroup()
 
Copy content oscar:is_simple(G)
 

Group statistics

Copy content comment:Compute statistics for the group G
 
Copy content magma:// Magma code to output the first two rows of the group statistics table element_orders := [Order(g) : g in G]; orders := Set(element_orders); printf "Orders: %o\n", orders; printf "Elements: %o %o\n", [#[x : x in element_orders | x eq n] : n in orders], Order(G); cc_orders := [cc[1] : cc in ConjugacyClasses(G)]; printf "Conjugacy classes: %o %o\n", [#[x : x in cc_orders | x eq n] : n in orders], #cc_orders;
 
Copy content gap:# Gap code to output the first two rows of the group statistics table element_orders := List(Elements(G), g -> Order(g)); orders := Set(element_orders); Print("Orders: ", orders, "\n"); element_counts := List(orders, n -> Length(Filtered(element_orders, x -> x = n))); Print("Elements: ", element_counts, " ", Size(G), "\n"); cc_orders := List(ConjugacyClasses(G), cc -> Order(Representative(cc))); cc_counts := List(orders, n -> Length(Filtered(cc_orders, x -> x = n))); Print("Conjugacy classes: ", cc_counts, " ", Length(ConjugacyClasses(G)), "\n");
 
Copy content sage:# Sage code to output the first two rows of the group statistics table element_orders = [g.order() for g in G] orders = sorted(list(set(element_orders))) print("Orders:", orders) print("Elements:", [element_orders.count(n) for n in orders], G.order()) cc_orders = [cc[0].order() for cc in G.conjugacy_classes()] print("Conjugacy classes:", [cc_orders.count(n) for n in orders], len(cc_orders))
 
Copy content sage_gap:# Sage code (using the GAP interface) to output the first two rows of the group statistics table element_orders = [g.Order() for g in G.Elements()] orders = sorted(list(set(element_orders))) print("Orders:", orders) print("Elements:", [element_orders.count(n) for n in orders], G.Order()) cc_orders = [cc.Representative().Order() for cc in G.ConjugacyClasses()] print("Conjugacy classes:", [cc_orders.count(n) for n in orders], len(cc_orders))
 
Copy content oscar:# Oscar code to output the first two rows of the group statistics table element_orders = [order(g) for g in elements(G)] orders = sort(unique(element_orders)) println("Orders: ", orders) element_counts = [count(==(n), element_orders) for n in orders] println("Elements: ", element_counts, " ", order(G)) ccs = conjugacy_classes(G) cc_orders = [order(representative(cc)) for cc in ccs] cc_counts = [count(==(n), cc_orders) for n in orders] println("Conjugacy classes: ", cc_counts, " ", length(ccs))
 

Order 1 2 3 4 6 7 8 14
Elements 1 99 224 588 672 384 336 384 2688
Conjugacy classes   1 3 1 3 3 2 1 2 16
Divisions 1 3 1 3 2 1 1 1 13
Autjugacy classes 1 3 1 3 3 2 1 2 16

Copy content comment:Compute statistics about the characters of G
 
Copy content magma:// Outputs [<d_1,c_1>, <d_2,c_2>, ...] where c_i is the number of irr. complex chars. of G with degree d_i CharacterDegrees(G);
 
Copy content gap:# Outputs [[d_1,c_1], [d_2,c_2], ...] where c_i is the number of irr. complex chars. of G with degree d_i CharacterDegrees(G);
 
Copy content sage:# Outputs [[d_1,c_1], [d_2,c_2], ...] where c_i is the number of irr. complex chars. of G with degree d_i character_degrees = [c[0] for c in G.character_table()] [[n, character_degrees.count(n)] for n in set(character_degrees)]
 
Copy content sage_gap:# Outputs [[d_1,c_1], [d_2,c_2], ...] where c_i is the number of irr. complex chars. of G with degree d_i G.CharacterDegrees()
 
Copy content oscar:# Outputs an MSet containing the absolutely irreducible degrees of G and their multiplicities. character_degrees(G)
 

Dimension 1 3 6 7 8 14 16 21 24 48
Irr. complex chars.   1 2 1 3 4 1 0 2 2 0 16
Irr. rational chars. 1 0 2 3 2 1 1 2 0 1 13

Minimal presentations

Permutation degree:$16$
Transitive degree:$16$
Rank: $2$
Inequivalent generating pairs: $2736$

Minimal degrees of faithful linear representations

Over $\mathbb{C}$ Over $\mathbb{R}$ Over $\mathbb{Q}$
Irreducible 8 8 8
Arbitrary 8 8 8

Constructions

Show commands: Gap / Magma / Oscar / SageMath


Permutation group:Degree $16$ $\langle(1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8)\rangle$ Copy content Toggle raw display
Copy content comment:Define the group as a permutation group
 
Copy content magma:G := PermutationGroup< 16 | (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) >;
 
Copy content gap:G := Group( (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) );
 
Copy content sage:G = PermutationGroup(['(1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12)', '(1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8)'])
 
Copy content sage_gap:G = gap.new('Group( (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8) )')
 
Copy content oscar:G = @permutation_group(16, (1,7,3,13,2,8,4,14)(5,10,16,11,6,9,15,12), (1,13,3,6,16,11,9,2,14,4,5,15,12,10)(7,8))
 
Transitive group: 16T1506 16T1507 more information
Copy content magma:G := TransitiveGroup(16, 1506);
 
Copy content gap:G := TransitiveGroup(16, 1506);
 
Copy content sage:G = TransitiveGroup(16, 1506)
 
Copy content sage_gap:G = libgap.TransitiveGroup(16, 1506)
 
Copy content oscar:G = transitive_group(16, 1506)
 
Copy content magma:G := TransitiveGroup(16, 1507);
 
Copy content gap:G := TransitiveGroup(16, 1507);
 
Copy content sage:G = TransitiveGroup(16, 1507)
 
Copy content sage_gap:G = libgap.TransitiveGroup(16, 1507)
 
Copy content oscar:G = transitive_group(16, 1507)
 
Direct product: not isomorphic to a non-trivial direct product
Semidirect product: $C_2^4$ $\,\rtimes\,$ $\PSL(2,7)$ more information
Trans. wreath product: not isomorphic to a non-trivial transitive wreath product
Non-split product: $C_2$ . $(C_2^3:\GL(3,2))$ more information

Elements of the group are displayed as permutations of degree 16.

Homology

Abelianization: $C_1 $
Copy content comment:The abelianization of the group
 
Copy content magma:quo< G | CommutatorSubgroup(G) >;
 
Copy content gap:FactorGroup(G, DerivedSubgroup(G));
 
Copy content sage:G.quotient(G.commutator())
 
Copy content sage_gap:G.FactorGroup(G.DerivedSubgroup())
 
Copy content oscar:quo(G, derived_subgroup(G)[1])
 
Schur multiplier: $C_{2}$
Copy content comment:The Schur multiplier of the group
 
Copy content gap:AbelianInvariantsMultiplier(G);
 
Copy content sage:G.homology(2)
 
Copy content sage_gap:G.AbelianInvariantsMultiplier()
 
Commutator length: $1$
Copy content comment:The commutator length of the group
 
Copy content gap:CommutatorLength(G);
 
Copy content sage_gap:G.CommutatorLength()
 

Subgroups

Copy content comment:List of subgroups of the group
 
Copy content magma:Subgroups(G);
 
Copy content gap:AllSubgroups(G);
 
Copy content sage:G.subgroups()
 
Copy content sage_gap:G.AllSubgroups()
 
Copy content oscar:subgroups(G)
 

There are 5770 subgroups in 129 conjugacy classes, 4 normal, and all normal subgroups are characteristic.

Characteristic subgroups are shown in this color.

Special subgroups

Center: $Z \simeq$ $C_2$ $G/Z \simeq$ $C_2^3:\GL(3,2)$
Copy content comment:Center of the group
 
Copy content magma:Center(G);
 
Copy content gap:Center(G);
 
Copy content sage:G.center()
 
Copy content sage_gap:G.Center()
 
Copy content oscar:center(G)
 
Commutator: $G' \simeq$ $C_2^4:\PSL(2,7)$ $G/G' \simeq$ $C_1$
Copy content comment:Commutator subgroup of the group G
 
Copy content magma:CommutatorSubgroup(G);
 
Copy content gap:DerivedSubgroup(G);
 
Copy content sage:G.commutator()
 
Copy content sage_gap:G.DerivedSubgroup()
 
Copy content oscar:derived_subgroup(G)
 
Frattini: $\Phi \simeq$ $C_2$ $G/\Phi \simeq$ $C_2^3:\GL(3,2)$
Copy content comment:Frattini subgroup of the group G
 
Copy content magma:FrattiniSubgroup(G);
 
Copy content gap:FrattiniSubgroup(G);
 
Copy content sage:G.frattini_subgroup()
 
Copy content sage_gap:G.FrattiniSubgroup()
 
Copy content oscar:frattini_subgroup(G)
 
Fitting: $\operatorname{Fit} \simeq$ $C_2^4$ $G/\operatorname{Fit} \simeq$ $\PSL(2,7)$
Copy content comment:Fitting subgroup of the group G
 
Copy content magma:FittingSubgroup(G);
 
Copy content gap:FittingSubgroup(G);
 
Copy content sage:G.fitting_subgroup()
 
Copy content sage_gap:G.FittingSubgroup()
 
Copy content oscar:fitting_subgroup(G)
 
Radical: $R \simeq$ $C_2^4$ $G/R \simeq$ $\PSL(2,7)$
Copy content comment:Radical of the group G
 
Copy content magma:Radical(G);
 
Copy content gap:SolvableRadical(G);
 
Copy content sage_gap:G.SolvableRadical()
 
Copy content oscar:solvable_radical(G)
 
Socle: $\operatorname{soc} \simeq$ $C_2$ $G/\operatorname{soc} \simeq$ $C_2^3:\GL(3,2)$
Copy content comment:Socle of the group G
 
Copy content magma:Socle(G);
 
Copy content gap:Socle(G);
 
Copy content sage:G.socle()
 
Copy content sage_gap:G.Socle()
 
Copy content oscar:socle(G)
 
2-Sylow subgroup: $P_{ 2 } \simeq$ $C_4^2:D_4$
3-Sylow subgroup: $P_{ 3 } \simeq$ $C_3$
7-Sylow subgroup: $P_{ 7 } \simeq$ $C_7$

Subgroup diagram and profile

For the default diagram, subgroups are sorted vertically by the number of prime divisors (counted with multiplicity) in their orders.
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Subgroup information

Click on a subgroup in the diagram to see information about it.

Series

Derived series $C_2^4:\PSL(2,7)$
Copy content comment:Derived series of the group G
 
Copy content magma:DerivedSeries(G);
 
Copy content gap:DerivedSeriesOfGroup(G);
 
Copy content sage:G.derived_series()
 
Copy content sage_gap:G.DerivedSeriesOfGroup()
 
Copy content oscar:derived_series(G)
 
Chief series $C_2^4:\PSL(2,7)$ $\rhd$ $C_2^4$ $\rhd$ $C_2$ $\rhd$ $C_1$
Copy content comment:Chief series of the group G
 
Copy content magma:ChiefSeries(G);
 
Copy content gap:ChiefSeries(G);
 
Copy content sage:libgap(G).ChiefSeries()
 
Copy content sage_gap:G.ChiefSeries()
 
Copy content oscar:chief_series(G)
 
Lower central series $C_2^4:\PSL(2,7)$
Copy content comment:The lower central series of the group G
 
Copy content magma:LowerCentralSeries(G);
 
Copy content gap:LowerCentralSeriesOfGroup(G);
 
Copy content sage:G.lower_central_series()
 
Copy content sage_gap:G.LowerCentralSeriesOfGroup()
 
Copy content oscar:lower_central_series(G)
 
Upper central series $C_1$ $\lhd$ $C_2$
Copy content comment:The upper central series of the group G
 
Copy content magma:UpperCentralSeries(G);
 
Copy content gap:UpperCentralSeriesOfGroup(G);
 
Copy content sage:G.upper_central_series()
 
Copy content sage_gap:G.UpperCentralSeriesOfGroup()
 
Copy content oscar:upper_central_series(G)
 

Supergroups

This group is a maximal subgroup of 11 larger groups in the database.

This group is a maximal quotient of 13 larger groups in the database.

Character theory

Copy content comment:Character table
 
Copy content magma:CharacterTable(G); // Output not guaranteed to exactly match the LMFDB table
 
Copy content gap:CharacterTable(G); # Output not guaranteed to exactly match the LMFDB table
 
Copy content sage:G.character_table() # Output not guaranteed to exactly match the LMFDB table
 
Copy content sage_gap:G.CharacterTable() # Output not guaranteed to exactly match the LMFDB table
 
Copy content oscar:character_table(G) # Output not guaranteed to exactly match the LMFDB table
 

Complex character table

1A 2A 2B 2C 3A 4A 4B 4C 6A 6B1 6B-1 7A1 7A-1 8A 14A1 14A-1
Size 1 1 14 84 224 84 168 336 224 224 224 192 192 336 192 192
2 P 1A 1A 1A 1A 3A 2A 2B 2C 3A 3A 3A 7A1 7A-1 4A 7A1 7A-1
3 P 1A 2A 2B 2C 1A 4A 4B 4C 2A 2B 2B 7A-1 7A1 8A 14A-1 14A1
7 P 1A 2A 2B 2C 3A 4A 4B 4C 6A 6B1 6B-1 1A 1A 8A 2A 2A
Type
2688.ci.1a R 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2688.ci.3a1 C 3 3 3 1 0 1 1 1 0 0 0 ζ731ζ7ζ72 ζ73+ζ7+ζ72 1 ζ731ζ7ζ72 ζ73+ζ7+ζ72
2688.ci.3a2 C 3 3 3 1 0 1 1 1 0 0 0 ζ73+ζ7+ζ72 ζ731ζ7ζ72 1 ζ73+ζ7+ζ72 ζ731ζ7ζ72
2688.ci.6a R 6 6 6 2 0 2 2 0 0 0 0 1 1 0 1 1
2688.ci.7a R 7 7 7 1 1 1 1 1 1 1 1 0 0 1 0 0
2688.ci.7b R 7 7 1 1 1 3 1 1 1 1 1 0 0 1 0 0
2688.ci.7c R 7 7 1 3 1 1 1 1 1 1 1 0 0 1 0 0
2688.ci.8a R 8 8 0 0 2 0 0 0 2 0 0 1 1 0 1 1
2688.ci.8b R 8 8 8 0 1 0 0 0 1 1 1 1 1 0 1 1
2688.ci.8c1 C 8 8 0 0 1 0 0 0 1 12ζ3 1+2ζ3 1 1 0 1 1
2688.ci.8c2 C 8 8 0 0 1 0 0 0 1 1+2ζ3 12ζ3 1 1 0 1 1
2688.ci.14a R 14 14 2 2 1 2 2 0 1 1 1 0 0 0 0 0
2688.ci.21a R 21 21 3 3 0 1 1 1 0 0 0 0 0 1 0 0
2688.ci.21b R 21 21 3 1 0 3 1 1 0 0 0 0 0 1 0 0
2688.ci.24a1 C 24 24 0 0 0 0 0 0 0 0 0 ζ731ζ7ζ72 ζ73+ζ7+ζ72 0 ζ73+1+ζ7+ζ72 ζ73ζ7ζ72
2688.ci.24a2 C 24 24 0 0 0 0 0 0 0 0 0 ζ73+ζ7+ζ72 ζ731ζ7ζ72 0 ζ73ζ7ζ72 ζ73+1+ζ7+ζ72

Rational character table

1A 2A 2B 2C 3A 4A 4B 4C 6A 6B 7A 8A 14A
Size 1 1 14 84 224 84 168 336 224 448 384 336 384
2 P 1A 1A 1A 1A 3A 2A 2B 2C 3A 3A 7A 4A 7A
3 P 1A 2A 2B 2C 1A 4A 4B 4C 2A 2B 7A 8A 14A
7 P 1A 2A 2B 2C 3A 4A 4B 4C 6A 6B 1A 8A 2A
2688.ci.1a 1 1 1 1 1 1 1 1 1 1 1 1 1
2688.ci.3a 6 6 6 2 0 2 2 2 0 0 1 2 1
2688.ci.6a 6 6 6 2 0 2 2 0 0 0 1 0 1
2688.ci.7a 7 7 7 1 1 1 1 1 1 1 0 1 0
2688.ci.7b 7 7 1 1 1 3 1 1 1 1 0 1 0
2688.ci.7c 7 7 1 3 1 1 1 1 1 1 0 1 0
2688.ci.8a 8 8 0 0 2 0 0 0 2 0 1 0 1
2688.ci.8b 8 8 8 0 1 0 0 0 1 1 1 0 1
2688.ci.8c 16 16 0 0 2 0 0 0 2 0 2 0 2
2688.ci.14a 14 14 2 2 1 2 2 0 1 1 0 0 0
2688.ci.21a 21 21 3 3 0 1 1 1 0 0 0 1 0
2688.ci.21b 21 21 3 1 0 3 1 1 0 0 0 1 0
2688.ci.24a 48 48 0 0 0 0 0 0 0 0 1 0 1