LMFDB - Abstract group 8160.a: $\SOMinus(4,4)$

magma:G := SOMinus(4, 4);

comment:Define the group as a permutation group

gap:G := Group( (2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17), (1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15), (1,6,13,5,4,2,15,10,14,12,3,9,7,11,8), (1,7)(2,13)(3,10)(4,11)(5,12)(8,14) );

sage:G = PermutationGroup(['(2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17)', '(1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)', '(1,6,13,5,4,2,15,10,14,12,3,9,7,11,8)', '(1,7)(2,13)(3,10)(4,11)(5,12)(8,14)'])

Group information

Description:	$\SOMinus(4,4)$
Order:	$8160$$\medspace = 2^{5} \cdot 3 \cdot 5 \cdot 17 $	comment:Order of the group magma:Order(G); gap:Order(G); sage:G.order() sage_gap:G.Order()
Exponent:	$1020$$\medspace = 2^{2} \cdot 3 \cdot 5 \cdot 17 $	comment:Exponent of the group magma:Exponent(G); gap:Exponent(G); sage:G.exponent() sage_gap:G.Exponent()
Automorphism group:	$\SL(2,16).C_4$, of order $16320$$\medspace = 2^{6} \cdot 3 \cdot 5 \cdot 17 $	comment:Automorphism group gap:AutomorphismGroup(G); magma:AutomorphismGroup(G); sage_gap:G.AutomorphismGroup()
Composition factors:	$C_2$, $\SL(2,16)$	comment:Composition factors of the group magma:CompositionFactors(G); gap:CompositionSeries(G); sage:G.composition_series() sage_gap:G.CompositionSeries()
Derived length:	$1$	comment:Derived length of the group magma:DerivedLength(G); gap:DerivedLength(G); sage_gap:G.DerivedLength()

This group is nonabelian, almost simple, and nonsolvable.

comment:Determine if the group G is abelian

magma:IsAbelian(G);

gap:IsAbelian(G);

sage:G.is_abelian()

sage_gap:G.IsAbelian()

comment:Determine if the group G is cyclic

magma:IsCyclic(G);

gap:IsCyclic(G);

sage:G.is_cyclic()

sage_gap:G.IsCyclic()

comment:Determine if the group G is nilpotent

magma:IsNilpotent(G);

gap:IsNilpotentGroup(G);

sage:G.is_nilpotent()

sage_gap:G.IsNilpotentGroup()

comment:Determine if the group G is solvable

magma:IsSolvable(G);

gap:IsSolvableGroup(G);

sage:G.is_solvable()

sage_gap:G.IsSolvableGroup()

comment:Determine if the group G is supersolvable

gap:IsSupersolvableGroup(G);

sage:G.is_supersolvable()

sage_gap:G.IsSupersolvableGroup()

comment:Determine if the group G is simple

magma:IsSimple(G);

gap:IsSimpleGroup(G);

sage_gap:G.IsSimpleGroup()

Group statistics

comment:Compute statistics for the group G

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;

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");

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))

Order	1	2	3	4	5	6	10	15	17
Elements	1	323	272	1020	544	1360	1632	1088	1920	8160
Conjugacy classes	1	2	1	1	2	1	2	2	4	16
Divisions	1	2	1	1	1	1	1	1	1	10
Autjugacy classes	1	2	1	1	1	1	1	1	2	11

comment:Compute statistics about the characters of G

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);

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);

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)]

sage_gap:G.CharacterDegrees()

Dimension	1	16	17	30	34	68	120
Irr. complex chars.	2	2	6	4	2	0	0	16
Irr. rational chars.	2	2	2	0	2	1	1	10

Minimal presentations

Permutation degree:	$17$
Transitive degree:	$17$
Rank:	$2$
Inequivalent generating pairs:	$2817$

Minimal degrees of faithful linear representations

	Over $\mathbb{C}$	Over $\mathbb{R}$	Over $\mathbb{Q}$
Irreducible	16	16	16
Arbitrary	16	16	16

Constructions

Show commands: Gap / Magma / SageMath

Groups of Lie type:	$\SOMinus(4,4)$, $\GOMinus(4,4)$, $\PSOMinus(4,4)$, $\PGOMinus(4,4)$, $\CSOMinus(4,4)$
Permutation group:	Degree $17$ $\langle(2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17), (1,16)(2,3)(4,5)(6,7) \!\cdots\! \rangle$ (2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17), (1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15), (1,6,13,5,4,2,15,10,14,12,3,9,7,11,8), (1,7)(2,13)(3,10)(4,11)(5,12)(8,14)
comment:Define the group as a permutation group magma:G := PermutationGroup< 17 \| (2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17), (1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15), (1,6,13,5,4,2,15,10,14,12,3,9,7,11,8), (1,7)(2,13)(3,10)(4,11)(5,12)(8,14) >; gap:G := Group( (2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17), (1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15), (1,6,13,5,4,2,15,10,14,12,3,9,7,11,8), (1,7)(2,13)(3,10)(4,11)(5,12)(8,14) ); sage:G = PermutationGroup(['(2,3)(4,9)(5,7)(6,8)(10,14)(11,13)(12,15)(16,17)', '(1,16)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)', '(1,6,13,5,4,2,15,10,14,12,3,9,7,11,8)', '(1,7)(2,13)(3,10)(4,11)(5,12)(8,14)'])
Transitive group:	17T7	34T28	more information
Direct product:	not isomorphic to a non-trivial direct product
Semidirect product:	$\SL(2,16)$ $\,\rtimes\,$ $C_2$		more information
Trans. wreath product:	not isomorphic to a non-trivial transitive wreath product

Elements of the group are displayed as permutations of degree 17.

Homology

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

Subgroups

comment:List of subgroups of the group

magma:Subgroups(G);

gap:AllSubgroups(G);

sage:G.subgroups()

sage_gap:G.AllSubgroups()

There are 10002 subgroups in 47 conjugacy classes, 3 normal, and all normal subgroups are characteristic.

Characteristic subgroups are shown in this color.

Special subgroups

Center:	$Z \simeq$ $C_1$	$G/Z \simeq$ $\SOMinus(4,4)$	comment:Center of the group magma:Center(G); gap:Center(G); sage:G.center() sage_gap:G.Center()
Commutator:	$G' \simeq$ $\SL(2,16)$	$G/G' \simeq$ $C_2$	comment:Commutator subgroup of the group G magma:CommutatorSubgroup(G); gap:DerivedSubgroup(G); sage:G.commutator() sage_gap:G.DerivedSubgroup()
Frattini:	$\Phi \simeq$ $C_1$	$G/\Phi \simeq$ $\SOMinus(4,4)$	comment:Frattini subgroup of the group G magma:FrattiniSubgroup(G); gap:FrattiniSubgroup(G); sage:G.frattini_subgroup() sage_gap:G.FrattiniSubgroup()
Fitting:	$\operatorname{Fit} \simeq$ $C_1$	$G/\operatorname{Fit} \simeq$ $\SOMinus(4,4)$	comment:Fitting subgroup of the group G magma:FittingSubgroup(G); gap:FittingSubgroup(G); sage:G.fitting_subgroup() sage_gap:G.FittingSubgroup()
Radical:	$R \simeq$ $C_1$	$G/R \simeq$ $\SOMinus(4,4)$	comment:Radical of the group G magma:Radical(G); gap:SolvableRadical(G); sage_gap:G.SolvableRadical()
Socle:	$\operatorname{soc} \simeq$ $\SL(2,16)$	$G/\operatorname{soc} \simeq$ $C_2$	comment:Socle of the group G magma:Socle(G); gap:Socle(G); sage:G.socle() sage_gap:G.Socle()
2-Sylow subgroup:	$P_{ 2 } \simeq$ $C_2^2\wr C_2$
3-Sylow subgroup:	$P_{ 3 } \simeq$ $C_3$
5-Sylow subgroup:	$P_{ 5 } \simeq$ $C_5$
17-Sylow subgroup:	$P_{ 17 } \simeq$ $C_{17}$

Subgroup diagram and profile

For the default diagram, subgroups are sorted vertically by the number of prime divisors (counted with multiplicity) in their orders.
To see subgroups sorted vertically by order instead, check this box.

Subgroup information

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

See a full page version of the diagram

Series

Derived series

$\SOMinus(4,4)$

$\rhd$

$\SL(2,16)$

comment:Derived series of the group GF

magma:DerivedSeries(G);

gap:DerivedSeriesOfGroup(G);

sage:G.derived_series()

sage_gap:G.DerivedSeriesOfGroup()

Chief series

$\SOMinus(4,4)$

$\rhd$

$\SL(2,16)$

$\rhd$

$C_1$

comment:Chief series of the group G

magma:ChiefSeries(G);

gap:ChiefSeries(G);

sage_gap:G.ChiefSeries()

Lower central series

$\SOMinus(4,4)$

$\rhd$

$\SL(2,16)$

comment:The lower central series of the group G

magma:LowerCentralSeries(G);

gap:LowerCentralSeriesOfGroup(G);

sage:G.lower_central_series()

sage_gap:G.LowerCentralSeriesOfGroup()

Upper central series

$C_1$

comment:The upper central series of the group G

magma:UpperCentralSeries(G);

gap:UpperCentralSeriesOfGroup(G);

sage:G.upper_central_series()

sage_gap:G.UpperCentralSeriesOfGroup()

Supergroups

This group is a maximal subgroup of 3 larger groups in the database.

This group is a maximal quotient of 2 larger groups in the database.

Character theory

comment:Character table

magma:CharacterTable(G); // Output not guaranteed to exactly match the LMFDB table

gap:CharacterTable(G); # Output not guaranteed to exactly match the LMFDB table

sage:G.character_table() # Output not guaranteed to exactly match the LMFDB table

sage_gap:G.CharacterTable() # Output not guaranteed to exactly match the LMFDB table

Complex character table

		1A	2A	2B	3A	4A	5A1	5A2	6A	10A1	10A3	15A1	15A2	17A1	17A2	17A3	17A6
	Size	1	68	255	272	1020	272	272	1360	816	816	544	544	480	480	480	480
	2 P	1A	1A	1A	3A	2B	5A2	5A1	3A	5A1	5A2	15A2	15A1	17A2	17A1	17A6	17A3
	3 P	1A	2A	2B	1A	4A	5A2	5A1	2A	10A3	10A1	5A1	5A2	17A3	17A6	17A2	17A1
	5 P	1A	2A	2B	3A	4A	1A	1A	6A	2A	2A	3A	3A	17A3	17A6	17A2	17A1
	17 P	1A	2A	2B	3A	4A	5A2	5A1	6A	10A3	10A1	15A2	15A1	1A	1A	1A	1A
	Type
8160.a.1a	R	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$
8160.a.1b	R	$1$	$- 1$	$1$	$1$	$- 1$	$1$	$1$	$- 1$	$- 1$	$- 1$	$1$	$1$	$1$	$1$	$1$	$1$
8160.a.16a	R	$16$	$4$	$0$	$1$	$0$	$1$	$1$	$1$	$- 1$	$- 1$	$1$	$1$	$- 1$	$- 1$	$- 1$	$- 1$
8160.a.16b	R	$16$	$- 4$	$0$	$1$	$0$	$1$	$1$	$- 1$	$1$	$1$	$1$	$1$	$- 1$	$- 1$	$- 1$	$- 1$
8160.a.17a	R	$17$	$5$	$1$	$- 1$	$1$	$2$	$2$	$- 1$	$0$	$0$	$- 1$	$- 1$	$0$	$0$	$0$	$0$
8160.a.17b	R	$17$	$- 5$	$1$	$- 1$	$- 1$	$2$	$2$	$1$	$0$	$0$	$- 1$	$- 1$	$0$	$0$	$0$	$0$
8160.a.17c1	R	$17$	$3$	$1$	$2$	$- 1$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$0$	$- ζ_{5}^{- 1} - ζ_{5}$	$- ζ_{5}^{- 2} - ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$0$	$0$	$0$	$0$
8160.a.17c2	R	$17$	$3$	$1$	$2$	$- 1$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$0$	$- ζ_{5}^{- 2} - ζ_{5}^{2}$	$- ζ_{5}^{- 1} - ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$0$	$0$	$0$	$0$
8160.a.17d1	R	$17$	$- 3$	$1$	$2$	$1$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$0$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$0$	$0$	$0$	$0$
8160.a.17d2	R	$17$	$- 3$	$1$	$2$	$1$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$0$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$ζ_{5}^{- 2} + ζ_{5}^{2}$	$ζ_{5}^{- 1} + ζ_{5}$	$0$	$0$	$0$	$0$
8160.a.30a1	R	$30$	$0$	$- 2$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$- ζ_{17}^{- 4} - ζ_{17}^{- 1} - ζ_{17} - ζ_{17}^{4}$	$- ζ_{17}^{- 8} - ζ_{17}^{- 2} - ζ_{17}^{2} - ζ_{17}^{8}$	$- ζ_{17}^{- 5} - ζ_{17}^{- 3} - ζ_{17}^{3} - ζ_{17}^{5}$	$- ζ_{17}^{- 7} - ζ_{17}^{- 6} - ζ_{17}^{6} - ζ_{17}^{7}$
8160.a.30a2	R	$30$	$0$	$- 2$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$- ζ_{17}^{- 5} - ζ_{17}^{- 3} - ζ_{17}^{3} - ζ_{17}^{5}$	$- ζ_{17}^{- 7} - ζ_{17}^{- 6} - ζ_{17}^{6} - ζ_{17}^{7}$	$- ζ_{17}^{- 8} - ζ_{17}^{- 2} - ζ_{17}^{2} - ζ_{17}^{8}$	$- ζ_{17}^{- 4} - ζ_{17}^{- 1} - ζ_{17} - ζ_{17}^{4}$
8160.a.30a3	R	$30$	$0$	$- 2$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$- ζ_{17}^{- 8} - ζ_{17}^{- 2} - ζ_{17}^{2} - ζ_{17}^{8}$	$- ζ_{17}^{- 4} - ζ_{17}^{- 1} - ζ_{17} - ζ_{17}^{4}$	$- ζ_{17}^{- 7} - ζ_{17}^{- 6} - ζ_{17}^{6} - ζ_{17}^{7}$	$- ζ_{17}^{- 5} - ζ_{17}^{- 3} - ζ_{17}^{3} - ζ_{17}^{5}$
8160.a.30a4	R	$30$	$0$	$- 2$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$0$	$- ζ_{17}^{- 7} - ζ_{17}^{- 6} - ζ_{17}^{6} - ζ_{17}^{7}$	$- ζ_{17}^{- 5} - ζ_{17}^{- 3} - ζ_{17}^{3} - ζ_{17}^{5}$	$- ζ_{17}^{- 4} - ζ_{17}^{- 1} - ζ_{17} - ζ_{17}^{4}$	$- ζ_{17}^{- 8} - ζ_{17}^{- 2} - ζ_{17}^{2} - ζ_{17}^{8}$
8160.a.34a1	R	$34$	$0$	$2$	$- 2$	$0$	$2 ζ_{5}^{- 2} + 2 ζ_{5}^{2}$	$2 ζ_{5}^{- 1} + 2 ζ_{5}$	$0$	$0$	$0$	$- ζ_{5}^{- 1} - ζ_{5}$	$- ζ_{5}^{- 2} - ζ_{5}^{2}$	$0$	$0$	$0$	$0$
8160.a.34a2	R	$34$	$0$	$2$	$- 2$	$0$	$2 ζ_{5}^{- 1} + 2 ζ_{5}$	$2 ζ_{5}^{- 2} + 2 ζ_{5}^{2}$	$0$	$0$	$0$	$- ζ_{5}^{- 2} - ζ_{5}^{2}$	$- ζ_{5}^{- 1} - ζ_{5}$	$0$	$0$	$0$	$0$

Rational character table

		1A	2A	2B	3A	4A	5A	6A	10A	15A	17A
	Size	1	68	255	272	1020	544	1360	1632	1088	1920
	2 P	1A	1A	1A	3A	2B	5A	3A	5A	15A	17A
	3 P	1A	2A	2B	1A	4A	5A	2A	10A	5A	17A
	5 P	1A	2A	2B	3A	4A	1A	6A	2A	3A	17A
	17 P	1A	2A	2B	3A	4A	5A	6A	10A	15A	1A
8160.a.1a		$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$	$1$
8160.a.1b		$1$	$- 1$	$1$	$1$	$- 1$	$1$	$- 1$	$- 1$	$1$	$1$
8160.a.16a		$16$	$4$	$0$	$1$	$0$	$1$	$1$	$- 1$	$1$	$- 1$
8160.a.16b		$16$	$- 4$	$0$	$1$	$0$	$1$	$- 1$	$1$	$1$	$- 1$
8160.a.17a		$17$	$5$	$1$	$- 1$	$1$	$2$	$- 1$	$0$	$- 1$	$0$
8160.a.17b		$17$	$- 5$	$1$	$- 1$	$- 1$	$2$	$1$	$0$	$- 1$	$0$
8160.a.17c		$34$	$6$	$2$	$4$	$- 2$	$- 1$	$0$	$1$	$- 1$	$0$
8160.a.17d		$34$	$- 6$	$2$	$4$	$2$	$- 1$	$0$	$- 1$	$- 1$	$0$
8160.a.30a		$120$	$0$	$- 8$	$0$	$0$	$0$	$0$	$0$	$0$	$1$
8160.a.34a		$68$	$0$	$4$	$- 4$	$0$	$- 2$	$0$	$0$	$1$	$0$

Overview	Random
Universe	Knowledge

Classical	Maass
Hilbert	Bianchi

Elliptic curves over $\Q$
Elliptic curves over $\Q(\alpha)$
Genus 2 curves over $\Q$
Higher genus families
Abelian varieties over $\F_{q}$
Belyi maps

Label	8160.a
Order	\( 2^{5} \cdot 3 \cdot 5 \cdot 17 \)
Exponent	\( 2^{2} \cdot 3 \cdot 5 \cdot 17 \)

Nilpotent	no
Solvable	no
$\card{G^{\mathrm{ab}}}$	\( 2 \)
$\card{Z(G)}$	\( 1 \)
$\card{\Aut(G)}$	\( 2^{6} \cdot 3 \cdot 5 \cdot 17 \)
$\card{\mathrm{Out}(G)}$	\( 2 \)
Perm deg.	$17$
Trans deg.	$17$
Rank	$2$

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Group information

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Minimal presentations

Minimal degrees of faithful linear representations

Constructions

Homology

Subgroups

Special subgroups

Subgroup diagram and profile

Classes of subgroups up to conjugation

Classes of subgroups up to automorphism

Normal subgroups

Normal subgroups up to automorphism

Subgroup information

Classes of subgroups up to conjugation

Classes of subgroups up to automorphism

Normal subgroups (quotient in parentheses)

Normal subgroups up to automorphism (quotient in parentheses)

Series

Supergroups

Character theory

Complex character table

Rational character table

This project is supported by grants from the US National Science Foundation, the UK Engineering and Physical Sciences Research Council, and the Simons Foundation.