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GroupTheory

  

Orbit

  

compute the orbit of a point under the action of a permutation group

  

Orbits

  

compute all the orbits of a permutation group

 

Calling Sequence

Parameters

Description

Examples

Compatibility

Calling Sequence

Orbit( alpha, G )

Orbits( G )

Parameters

G

-

a permutation group

alpha

-

posint; a point whose orbit is to be computed

Description

• 

The Orbit( alpha, G ) command returns the orbit of the point alpha under the action of the permutation group G.

• 

The returned value is an object that supports the following methods.

Representative( orb )

returns a representative of the orbit orb

numelems( orb )

returns the cardinality of the orbit orb

member( x, orb ) or x in orb

returns true if x belongs to the orbit orb

Elements( orb )

returns the elements of the orbit orb, as a set

• 

The Orbits( G ) command returns the set of all orbits of the permutation group G.

Examples

withGroupTheory:

GRubiksCubeGroup

G6,25,43,167,28,42,138,30,41,1117,19,24,2218,21,23,20,1,14,48,272,12,47,293,9,46,3233,35,40,3834,37,39,36,1,17,41,404,20,44,376,22,46,359,11,16,1410,13,15,12,3,38,43,195,36,45,218,33,48,2425,27,32,3026,29,31,28,1,3,8,62,5,7,49,33,25,1710,34,26,1811,35,27,19,14,22,30,3815,23,31,3916,24,32,4041,43,48,4642,45,47,44

(1)

O1Orbit1,G

O116,25,43,167,28,42,138,30,41,1117,19,24,2218,21,23,20,1,14,48,272,12,47,293,9,46,3233,35,40,3834,37,39,36,1,17,41,404,20,44,376,22,46,359,11,16,1410,13,15,12,3,38,43,195,36,45,218,33,48,2425,27,32,3026,29,31,28,1,3,8,62,5,7,49,33,25,1710,34,26,1811,35,27,19,14,22,30,3815,23,31,3916,24,32,4041,43,48,4642,45,47,44

(2)

numelemsO1

24

(3)

2inO1

false

(4)

O2Orbit2,G

O226,25,43,167,28,42,138,30,41,1117,19,24,2218,21,23,20,1,14,48,272,12,47,293,9,46,3233,35,40,3834,37,39,36,1,17,41,404,20,44,376,22,46,359,11,16,1410,13,15,12,3,38,43,195,36,45,218,33,48,2425,27,32,3026,29,31,28,1,3,8,62,5,7,49,33,25,1710,34,26,1811,35,27,19,14,22,30,3815,23,31,3916,24,32,4041,43,48,4642,45,47,44

(5)

numelemsO2

24

(6)

orbsOrbitsG

orbs16,25,43,167,28,42,138,30,41,1117,19,24,2218,21,23,20,1,14,48,272,12,47,293,9,46,3233,35,40,3834,37,39,36,1,17,41,404,20,44,376,22,46,359,11,16,1410,13,15,12,3,38,43,195,36,45,218,33,48,2425,27,32,3026,29,31,28,1,3,8,62,5,7,49,33,25,1710,34,26,1811,35,27,19,14,22,30,3815,23,31,3916,24,32,4041,43,48,4642,45,47,44,26,25,43,167,28,42,138,30,41,1117,19,24,2218,21,23,20,1,14,48,272,12,47,293,9,46,3233,35,40,3834,37,39,36,1,17,41,404,20,44,376,22,46,359,11,16,1410,13,15,12,3,38,43,195,36,45,218,33,48,2425,27,32,3026,29,31,28,1,3,8,62,5,7,49,33,25,1710,34,26,1811,35,27,19,14,22,30,3815,23,31,3916,24,32,4041,43,48,4642,45,47,44

(7)

nopsorbs

2

(8)

ElementsO2

2,4,5,7,10,12,13,15,18,20,21,23,26,28,29,31,34,36,37,39,42,44,45,47

(9)

Compatibility

• 

The GroupTheory[Orbit] and GroupTheory[Orbits] commands were introduced in Maple 17.

• 

For more information on Maple 17 changes, see Updates in Maple 17.

See Also

GroupTheory

GroupTheory[Elements]

GroupTheory[RubiksCubeGroup]

numelems

Perm