org.lsmp.djep.groupJep.groups

Class PermutationGroup

java.lang.Object

org.lsmp.djep.groupJep.groups.Group

org.lsmp.djep.groupJep.groups.PermutationGroup

All Implemented Interfaces:

GroupI, HasListI

public class PermutationGroup
extends Group
implements GroupI, HasListI

The group of permutations. TODO not sure if this works, not really tested.

Author:

Rich Morris

See Also:

Created on 15-Mar-2004

Field Summary

Fields

Modifier and Type	Field and Description
protected Permutation	zeroPerm

Constructor Summary

Constructors

Constructor and Description
PermutationGroup(int n)

Method Summary

Modifier and Type	Method and Description
Number	add(Number a, Number b) Get sum of the numbers
boolean	equals(Number a, Number b) whether two numbers are equal
Number	getInverse(Number a) Get Inverse of a number
Number	getZERO() Returns the identity element under +
Number	list(Number[] eles)
Number	sub(Number a, Number b) Get the difference of the numbers.
Number	valueOf(Number[] eles)
Number	valueOf(String s) returns number given by the string

Methods inherited from class org.lsmp.djep.groupJep.groups.Group

addStandardConstants, addStandardFunctions, getNumberFactory, isConstantPoly, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.lsmp.djep.groupJep.GroupI

addStandardConstants, addStandardFunctions, getNumberFactory, isConstantPoly

Field Detail

zeroPerm

protected Permutation zeroPerm

Constructor Detail

PermutationGroup

public PermutationGroup(int n)

Method Detail

getZERO

public Number getZERO()

Description copied from interface: GroupI

Returns the identity element under +

Specified by:

getZERO in interface GroupI

getInverse

public Number getInverse(Number a)

Description copied from interface: GroupI

Get Inverse of a number

Specified by:

getInverse in interface GroupI

add

public Number add(Number a,
                  Number b)

Description copied from interface: GroupI

Get sum of the numbers

Specified by:

add in interface GroupI

sub

public Number sub(Number a,
                  Number b)

Description copied from interface: GroupI

Get the difference of the numbers. i.e. a + (-b)

Specified by:

sub in interface GroupI

equals

public boolean equals(Number a,
                      Number b)

Description copied from interface: GroupI

whether two numbers are equal

Specified by:

equals in interface GroupI

valueOf

public Number valueOf(String s)

Description copied from interface: GroupI

returns number given by the string

Specified by:

valueOf in interface GroupI

valueOf

public Number valueOf(Number[] eles)

list

public Number list(Number[] eles)

Specified by:

list in interface HasListI